Harvey Gould

University of California, Berkeley

*This is an algorithmically generated author record based on publicly available information.

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University of California, Berkeley

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Lawrence Berkeley National Laboratory

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Harvey Gould has a total of 31 co-authors. Here are the top co-authors by number of shared publications:

A. Belkacem
Lawrence Berkeley National Laboratory
4 shared publications
B. Feinberg
Lawrence Berkeley National Laboratory, Berkeley, California, USA
4 shared publications
Jason M. Amini
Lawrence Berkeley National Laboratory Mail stop 71-259 94720 Berkeley CA
4 shared publications
W. E. Meyerhof
Department of Physics, Stanford University, Stanford, California 94305
4 shared publications
P. Thieberger
Accelerator and Fusion Research Division, Lawrence Berkeley Laboratory, MS 51-208, One Cyclotron Road, Berkeley, California 94720
2 shared publications
B. S. Rude
Accelerator and Fusion Research Division, Lawrence Berkeley Laboratory, MS 51-208, One Cyclotron Road, Berkeley, California 94720
1 shared publication

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Cited by 148
- 8 October 2003
- Published by American Physical Society (APS) in Physical Review Letters
High Precision Measurement of the Static Dipole Polarizability of Cesium
by Jason M. Amini, Harvey Gould
The cesium $6^{2} S_{1 / 2}$ scalar dipole polarizability $α_{0}$ has been determined from the time-of-flight of laser cooled and launched cesium atoms traveling through an electric field. We find $α_{0} = 6.611 \pm 0.009 \times 10^{- 39} {C m}^{2} / V = 59.42 \pm 0.08 \times 10^{- 24} {c m}^{3} = 401.0 \pm 0.6 a_{0}^{3}$ . The 0.14% uncertainty is a factor of 14 improvement over the previous measurement. Values for the $6^{2} P_{1 / 2}$ and $6^{2} P_{3 / 2}$ lifetimes and the $6^{2} S_{1 / 2}$ cesium-cesium dispersion coefficient $C_{6}$ are determined from $α_{0}$ using the procedure of Derevianko and Porsev [ Phys. Rev. A 65, 053403 (2002)].
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- 8 October 2003
- Published by American Physical Society (APS) in Physical Review Letters
High Precision Measurement of the Static Dipole Polarizability of Cesium
by Jason M. Amini, Harvey Gould
The cesium $6^{2} S_{1 / 2}$ scalar dipole polarizability $α_{0}$ has been determined from the time-of-flight of laser cooled and launched cesium atoms traveling through an electric field. We find $α_{0} = 6.611 \pm 0.009 \times 10^{- 39} {C m}^{2} / V = 59.42 \pm 0.08 \times 10^{- 24} {c m}^{3} = 401.0 \pm 0.6 a_{0}^{3}$ . The 0.14% uncertainty is a factor of 14 improvement over the previous measurement. Values for the $6^{2} P_{1 / 2}$ and $6^{2} P_{3 / 2}$ lifetimes and the $6^{2} S_{1 / 2}$ cesium-cesium dispersion coefficient $C_{6}$ are determined from $α_{0}$ using the procedure of Derevianko and Porsev [ Phys. Rev. A 65, 053403 (2002)].
Cited by 148
Open Access
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- 1 August 2003
- Published by arXiv in arXiv
High precision measurement of the static dipole polarizability of cesium
by Jason M. Amini, Harvey Gould
The cesium 6S_1/2 scalar dipole polarizability alpha_0 has been determined from the time-of-flight of laser cooled and launched cesium atoms traveling through an electric field. We find alpha_0 = 6.611+-0.009 x 10^-39 C m^2/V= 59.42+-0.08 x 10^-24 cm^3 = 401.0+-0.6 a_0^3. The 0.14% uncertainty is a factor of fourteen improvement over the previous measurement. Values for the 6P_1/2 and 6P_3/2 lifetimes and the 6S_1/2 cesium-cesium dispersion coefficient C_6 are determined from alpha_0 using the procedure of Derevianko and Porsev [Phys. Rev. A 65, 053403 (2002)].
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- 1 August 2003
- Published by arXiv in arXiv
Open Access
High precision measurement of the static dipole polarizability of cesium
by Jason M. Amini, Harvey Gould
The cesium 6S_1/2 scalar dipole polarizability alpha_0 has been determined from the time-of-flight of laser cooled and launched cesium atoms traveling through an electric field. We find alpha_0 = 6.611+-0.009 x 10^-39 C m^2/V= 59.42+-0.08 x 10^-24 cm^3 = 401.0+-0.6 a_0^3. The 0.14% uncertainty is a factor of fourteen improvement over the previous measurement. Values for the 6P_1/2 and 6P_3/2 lifetimes and the 6S_1/2 cesium-cesium dispersion coefficient C_6 are determined from alpha_0 using the procedure of Derevianko and Porsev [Phys. Rev. A 65, 053403 (2002)].
Open Access
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- 21 December 2001
- Published by arXiv in arXiv
Improved alternating gradient transport and focusing of neutral molecules
by Juris Kalnins, Glen Lambertson, Harvey Gould
Polar molecules, in strong-field seeking states, can be transported and focused by an alternating sequence of electric field gradients that focus in one transverse direction while defocusing in the other. We show, by calculation and numerical simulation, how one may greatly improve the alternating gradient transport and focusing of molecules. We use a new optimized multipole lens design, a FODO-lattice beam transport line, and lenses to match the beam transport line to the beam source and to the final focus. We derive analytic expressions for the potentials, fields, and gradients that may be used to design these lenses. We describe a simple lens optimization procedure and derive the equations of motion for tracking molecules through a beam transport line. As an example, we model a straight beamline that transports a 560 m/s jet-source beam of methyl fluoride15 m from its source and focuses it to 2 mm diameter. We calculate the beam transport line acceptance and beam survival, for a beam with a velocity spread, and estimate the transmitted intensity for specified source conditions. Possible applications are discussed.
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- 21 December 2001
- Published by arXiv in arXiv
Open Access
Improved alternating gradient transport and focusing of neutral molecules
by Juris Kalnins, Glen Lambertson, Harvey Gould
Polar molecules, in strong-field seeking states, can be transported and focused by an alternating sequence of electric field gradients that focus in one transverse direction while defocusing in the other. We show, by calculation and numerical simulation, how one may greatly improve the alternating gradient transport and focusing of molecules. We use a new optimized multipole lens design, a FODO-lattice beam transport line, and lenses to match the beam transport line to the beam source and to the final focus. We derive analytic expressions for the potentials, fields, and gradients that may be used to design these lenses. We describe a simple lens optimization procedure and derive the equations of motion for tracking molecules through a beam transport line. As an example, we model a straight beamline that transports a 560 m/s jet-source beam of methyl fluoride15 m from its source and focuses it to 2 mm diameter. We calculate the beam transport line acceptance and beam survival, for a beam with a velocity spread, and estimate the transmitted intensity for specified source conditions. Possible applications are discussed.
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Cited by 68
- 1 November 1999
- Published by American Physical Society (APS) in Physical Review A
Slowing and cooling molecules and neutral atoms by time-varying electric-field gradients
by Jason A. Maddi, Timothy P. Dinneen, Harvey Gould
A method of slowing, accelerating, cooling, and bunching molecules and neutral atoms using time-varying electric-field gradients is demonstrated with cesium atoms in a fountain. The effects are measured and found to be in agreement with our calculations. Time-varying electric-field-gradient slowing and cooling is applicable to atoms that have large dipole polarizabilities, including atoms that are not amenable to laser slowing and cooling, to Rydberg atoms, and to molecules, especially polar molecules with large electric dipole moments. The possible applications of this method include slowing and cooling thermal beams of atoms and molecules, launching cold atoms from a trap into a fountain, and measuring atomic dipole polarizabilities.
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- 1 November 1999
- Published by American Physical Society (APS) in Physical Review A
Slowing and cooling molecules and neutral atoms by time-varying electric-field gradients
by Jason A. Maddi, Timothy P. Dinneen, Harvey Gould
A method of slowing, accelerating, cooling, and bunching molecules and neutral atoms using time-varying electric-field gradients is demonstrated with cesium atoms in a fountain. The effects are measured and found to be in agreement with our calculations. Time-varying electric-field-gradient slowing and cooling is applicable to atoms that have large dipole polarizabilities, including atoms that are not amenable to laser slowing and cooling, to Rydberg atoms, and to molecules, especially polar molecules with large electric dipole moments. The possible applications of this method include slowing and cooling thermal beams of atoms and molecules, launching cold atoms from a trap into a fountain, and measuring atomic dipole polarizabilities.
Cited by 68
Open Access
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- 15 September 1999
- Published by arXiv in arXiv
Slowing and cooling molecules and neutral atoms by time-varying electric field gradients
by Jason A. Maddi, Timothy P. Dinneen, Harvey Gould
A method of slowing, accelerating, cooling, and bunching molecules and neutral atoms using time-varying electric field gradients is demonstrated with cesium atoms in a fountain. The effects are measured and found to be in agreement with calculation. Time-varying electric field gradient slowing and cooling is applicable to atoms that have large dipole polarizabilities, including atoms that are not amenable to laser slowing and cooling, to Rydberg atoms, and to molecules, especially polar molecules with large electric dipole moments. The possible applications of this method include slowing and cooling thermal beams of atoms and molecules, launching cold atoms from a trap into a fountain, and measuring atomic dipole polarizabilities.
Website
Google Scholar
- 15 September 1999
- Published by arXiv in arXiv
Open Access
Slowing and cooling molecules and neutral atoms by time-varying electric field gradients
by Jason A. Maddi, Timothy P. Dinneen, Harvey Gould
A method of slowing, accelerating, cooling, and bunching molecules and neutral atoms using time-varying electric field gradients is demonstrated with cesium atoms in a fountain. The effects are measured and found to be in agreement with calculation. Time-varying electric field gradient slowing and cooling is applicable to atoms that have large dipole polarizabilities, including atoms that are not amenable to laser slowing and cooling, to Rydberg atoms, and to molecules, especially polar molecules with large electric dipole moments. The possible applications of this method include slowing and cooling thermal beams of atoms and molecules, launching cold atoms from a trap into a fountain, and measuring atomic dipole polarizabilities.
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Cited by 27
- 1 August 1998
- Published by American Physical Society (APS) in Physical Review A
Electron capture from pair production by ${Au}^{79 +}$ at 10.8 GeV/nucleon
by A. Belkacem, N. Claytor, T. Dinneen, B. Feinberg, Harvey Gould
Cross sections for electron capture from pair production by 10.8-GeV/nucleon $(γ = 12.6)$ bare ${Au}^{78 +}$ ions have been measured in Au, Ag, Cu, and Al targets. These measurements can be compared with calculations used to predict beam lifetimes in the Relativistic Heavy Ion Collider at Brookhaven National Laboratory and Large Hadron Collider at CERN. Experiment and calculations are compared.
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- 1 August 1998
- Published by American Physical Society (APS) in Physical Review A
Electron capture from pair production by ${Au}^{79 +}$ at 10.8 GeV/nucleon
by A. Belkacem, N. Claytor, T. Dinneen, B. Feinberg, Harvey Gould
Cross sections for electron capture from pair production by 10.8-GeV/nucleon $(γ = 12.6)$ bare ${Au}^{78 +}$ ions have been measured in Au, Ag, Cu, and Al targets. These measurements can be compared with calculations used to predict beam lifetimes in the Relativistic Heavy Ion Collider at Brookhaven National Laboratory and Large Hadron Collider at CERN. Experiment and calculations are compared.
Cited by 27
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Cited by 43
- 1 October 1997
- Published by American Physical Society (APS) in Physical Review A
Capture, ionization, and pair-production processes in relativistic heavy-ion collisions in the 1-GeV/nucleon energy range
by A. Belkacem, Harvey Gould, B. Feinberg, R. Bossingham, W. E. Meyerhof
The cross sections for capture, ionization, capture from pair production, and free pair production were measured for 0.96-GeV/nucleon U $^{92 +}$ and 0.405-, 0.96-, and 1.3-GeV/nucleon La $^{57 +}$ ions incident on Au, Ag, and Cu targets. The cross sections for capture from pair production, free pair production, ionization, and total capture (the sum of capture from pair production, radiative electron capture, and nonradiative capture) are analyzed as a function of collision energy, projectile, and target atomic numbers. We find that, when the collision energy is increased from 0.405 GeV/nucleon to 1.3 GeV/nucleon, the capture from pair production and the free pair production cross sections increase by almost a factor of 6, while the capture cross section decreases by two orders of magnitude. The ionization cross section is found to vary very weakly with the collision energy in the 1-GeV/nucleon energy range. We found a dependence of free pair production cross sections on the target and projectile atomic number to be close to $Z^{2}$ , characteristic of an ionizationlike process. We also found a dependence of the capture from pair production cross sections on the target atomic number to be usually steeper than $Z_{t}^{2}$ , and on the projectile atomic number, somewhat steeper than the $Z_{p}^{5}$ , characteristic of a capturelike process. Theory and experiment are in some disagreement for capture from pair production, and free pair production, cross sections, but are in general agreement for the other capture processes and for ionization.
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- 1 October 1997
- Published by American Physical Society (APS) in Physical Review A
Capture, ionization, and pair-production processes in relativistic heavy-ion collisions in the 1-GeV/nucleon energy range
by A. Belkacem, Harvey Gould, B. Feinberg, R. Bossingham, W. E. Meyerhof
The cross sections for capture, ionization, capture from pair production, and free pair production were measured for 0.96-GeV/nucleon U $^{92 +}$ and 0.405-, 0.96-, and 1.3-GeV/nucleon La $^{57 +}$ ions incident on Au, Ag, and Cu targets. The cross sections for capture from pair production, free pair production, ionization, and total capture (the sum of capture from pair production, radiative electron capture, and nonradiative capture) are analyzed as a function of collision energy, projectile, and target atomic numbers. We find that, when the collision energy is increased from 0.405 GeV/nucleon to 1.3 GeV/nucleon, the capture from pair production and the free pair production cross sections increase by almost a factor of 6, while the capture cross section decreases by two orders of magnitude. The ionization cross section is found to vary very weakly with the collision energy in the 1-GeV/nucleon energy range. We found a dependence of free pair production cross sections on the target and projectile atomic number to be close to $Z^{2}$ , characteristic of an ionizationlike process. We also found a dependence of the capture from pair production cross sections on the target atomic number to be usually steeper than $Z_{t}^{2}$ , and on the projectile atomic number, somewhat steeper than the $Z_{p}^{5}$ , characteristic of a capturelike process. Theory and experiment are in some disagreement for capture from pair production, and free pair production, cross sections, but are in general agreement for the other capture processes and for ionization.
Cited by 43
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Cited by 35
- 31 October 1994
- Published by American Physical Society (APS) in Physical Review Letters
Projectile Energy and Atomic Number Dependence of Electron Capture from Pair Production in Relativistic Heavy Ion Collisions
by A. Belkacem, Harvey Gould, B. Feinberg, R. Bossingham, W. E. Meyerhof
We report the first measurement of the energy dependence of electron capture from electron-positron pair production in relativistic heavy ion collisions. For a ${La}^{57 +}$ beam incident on Au, Ag, and Cu targets at energies of 0.405, 0.956, and 1.3 GeV/u we find that the cross sections for capture from pair production and the free pair production process increase with increasing collision energy at similar rates. Combining with uranium data reported previously gives a projectile atomic number dependence for 0.956 GeV/u ions on a Au target of $Z_{p}^{6.54 \pm 0.65}$ for capture from pair production and $Z_{p}^{1.53 \pm 0.80}$ for the free pair production process.
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- 31 October 1994
- Published by American Physical Society (APS) in Physical Review Letters
Projectile Energy and Atomic Number Dependence of Electron Capture from Pair Production in Relativistic Heavy Ion Collisions
by A. Belkacem, Harvey Gould, B. Feinberg, R. Bossingham, W. E. Meyerhof
We report the first measurement of the energy dependence of electron capture from electron-positron pair production in relativistic heavy ion collisions. For a ${La}^{57 +}$ beam incident on Au, Ag, and Cu targets at energies of 0.405, 0.956, and 1.3 GeV/u we find that the cross sections for capture from pair production and the free pair production process increase with increasing collision energy at similar rates. Combining with uranium data reported previously gives a projectile atomic number dependence for 0.956 GeV/u ions on a Au target of $Z_{p}^{6.54 \pm 0.65}$ for capture from pair production and $Z_{p}^{1.53 \pm 0.80}$ for the free pair production process.
Cited by 35
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Cited by 10
- 1 March 1993
- Published by American Physical Society (APS) in Physical Review A
Relativistic electron- and proton-impact ionization of highly stripped heavy ions determined from projectile-electron loss inH2and He
by B. Feinberg, Harvey Gould, W. E. Meyerhof, A. Belkacem, H.-P. Hülskötter, J. R. Alonso, L. Blumenfeld, E. Dillard, N. Guardala, G. F. Krebs, et al.
We show that electron- and proton-impact ionization cross sections for highly stripped heavy ions can be deduced from the projectile-electron-loss cross sections determined by collisions with a $H_{2}$ and a He target. We measure electron loss for 100- and 380-MeV/u ${Au}^{52 +}$ , and 405-MeV/u $U^{86 +}$ in $H_{2}$ and He targets, and extract the electron- and proton-impact ionization cross sections. Our results are compared with calculations and with channeling experiments.
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- 1 March 1993
- Published by American Physical Society (APS) in Physical Review A
Relativistic electron- and proton-impact ionization of highly stripped heavy ions determined from projectile-electron loss inH2and He
by B. Feinberg, Harvey Gould, W. E. Meyerhof, A. Belkacem, H.-P. Hülskötter, J. R. Alonso, L. Blumenfeld, E. Dillard, N. Guardala, G. F. Krebs, et al.
We show that electron- and proton-impact ionization cross sections for highly stripped heavy ions can be deduced from the projectile-electron-loss cross sections determined by collisions with a $H_{2}$ and a He target. We measure electron loss for 100- and 380-MeV/u ${Au}^{52 +}$ , and 405-MeV/u $U^{86 +}$ in $H_{2}$ and He targets, and extract the electron- and proton-impact ionization cross sections. Our results are compared with calculations and with channeling experiments.
Cited by 10
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Cited by 13
- 1 February 1987
- Published by American Physical Society (APS) in Physical Review A
Multiple ionization in relativistic heavy-ion–atom collisions
by W. E. Meyerhof, R. Anholt, Xiang-Yuan Xu, Harvey Gould, B. Feinberg, R. J. McDonald, H. E. Wegner, P. Thieberger
We show that in relativistic heavy-ion collisions the independent-electron model can be used to predict cross sections for multiple inner-shell ionization in a single collision. Charge distributions of 430- and 955-MeV/amu $U^{90 +}$ , $U^{89 +}$ , $U^{83 +}$ , and $U^{68 +}$ beams emerging from thin solid targets were used to obtain single- and multiple-electron stripping cross sections. The probabilities of stripping electrons from the K, L, or M shells were calculated using the semiclassical approximation and Dirac hydrogenic wave functions. The data generally agree with theory. An influence of the Auger effect is seen in $U^{68 +}$ collisions.
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- 1 February 1987
- Published by American Physical Society (APS) in Physical Review A
Multiple ionization in relativistic heavy-ion–atom collisions
by W. E. Meyerhof, R. Anholt, Xiang-Yuan Xu, Harvey Gould, B. Feinberg, R. J. McDonald, H. E. Wegner, P. Thieberger
We show that in relativistic heavy-ion collisions the independent-electron model can be used to predict cross sections for multiple inner-shell ionization in a single collision. Charge distributions of 430- and 955-MeV/amu $U^{90 +}$ , $U^{89 +}$ , $U^{83 +}$ , and $U^{68 +}$ beams emerging from thin solid targets were used to obtain single- and multiple-electron stripping cross sections. The probabilities of stripping electrons from the K, L, or M shells were calculated using the semiclassical approximation and Dirac hydrogenic wave functions. The data generally agree with theory. An influence of the Auger effect is seen in $U^{68 +}$ collisions.
Cited by 13

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