LIFETIME OF THE 3.85-MEV LEVEL IN C13

Authors:
  • JSJ. J. Simpson
    J. J. Simpson
  • FCF M. A. Clark
    F M. A. Clark
  • ALA. E. Litherland
    A. E. Litherland

Abstract
The lifetime of the 3.85-Mev level in C13 has been measured by the Doppler shift attenuation method and has been found to be [ ] second. This lifetime together with the (9.3 ± 2.0) × 10−3 relative intensity of the E2 branch from this level implies a strength [ ] in Weisskopf units for this transition. It is also found that the primarily M2 transition to the ground level of C13 has [ ] and the E1 transition to the 3.68-Mev level has [ ]. The measured transition strengths are compared with recent theoretical calculations based upon the weak-coupling model.

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