RECOIL EFFECT IN BETA DECAY AND K CAPTURE
The study of recoil effects in beta decay and K capture is extended to the case of forbidden transitions. Formulas for the angular distribution of recoil nuclei from oriented parent nuclei, the polarization of the recoil nucleus, and the angular correlation between the recoil nucleus and the following gamma ray emitted in given state of circular polarization are presented. For beta decay the results, in which the Coulomb effects have been taken into account only through the Fermi function, are given in closed form for n-forbidden transitions. We have considered separately ST and VA interactions. The results are quite sensitive to the choice between the two couplings. In particular it is shown that for the socalled unique forbidden transitions of light-nuclei parity- nonconserving effects vanish for a VA interaction, whereas they are expected to be large with an ST interaction. The study of recoil effects in K capture, which has been limited to the case of first forbidden transitions, provides a set of experiments which may be used to determine the helicity of the neutrino. (auth)
- Research Organization:
- Princeton Univ., N.J.
- NSA Number:
- NSA-13-004047
- OSTI ID:
- 4286039
- Journal Information:
- Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Vol. Vol: 112; Other Information: Orig. Receipt Date: 31-DEC-59
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
THEORY, MEASUREMENT AND MEANING OF THE ELECTRON CAPTURE-POSITRON EMISSION RATIO
ORIENTED NUCLEI