CONDITIONS OF THE POSITIVE $beta$-DECAY (ENERGY RELATIONS AND FORBIDDEN CHARACTER) (in Hungarian)
In the case of BETA decay involving the emission of a positron a proton of the original nucleus is transformed into a neutron, emitting a positron and a neutrino. The emission of a positron in a process requires a suitable energy difference between the initial and the final states; decay takes place only if the mass of the nucleus before decay is larger than the mass after decay + 1 electron or a positron. Opinions were occasionally expressed in the literature that the BETA /sup +/ decay requires more energy than the BETA /sup - / type. The apparent difference is considered due to the fact that nuclide masses are used for practical reasons instead of the nuclear masses. The forbidden level of the transition is determined by the spin and the parity changes. A tabulation of the selection rules, defining the forbidden character, is presented. It is pointed out that in radioactive decay, positron may appear, under certain conditions, also in internal pair conversion and monoenergetic processes. (TTT)
- Research Organization:
- Inst. for Atomic Research, Debrecen, Hungary
- NSA Number:
- NSA-18-021227
- OSTI ID:
- 4008872
- Journal Information:
- Fiz. Szemle, Journal Name: Fiz. Szemle Vol. Vol: 13
- Country of Publication:
- Country unknown/Code not available
- Language:
- Hungarian
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