INVESTIGATION OF THE INFLUENCE OF NEUTRINO RECOIL AND ELECTRON-NEUTRON CORRELATION IN /cap beta/ DECAY OF He$sup 6$ USING A CLOUD CHAMBER
In order that the beta decay of He/sup 6/ (T/sub 1/2// = 0.86 sec) could be observed, Be(OH)/sub 2/ powder was placed in a cloud chamber. Directly before the exposure, a (Po + Be) neutron source was shot through a special air pipe with the aid of compressed air into the direct vicinity of the Be(OH)/sub 2/. The He/sup 6/ was obtained from the reaction Be/sup 9/(n, alpha ) He/sup 6/. A total of 2,000 photographs was obtained. Of these photographs 120 were such that it was possible to use them to measure either the energy of the electron and the electron-nucleus angle, or the energy of both the electron and the nucleus. The photographs were investigated stereoscopically and clearly showed the presence of the neutrino. Since the even nucleus He/sup 6/ has zero spin, and Li/sup 6/ has the experimentallydetermined spin of unity, the change in spin during the transition He/sup 6/ yields Li/sup 6/ will be DELTA I = I, so that according to the Gamow-Teller selection rules, either a tensor or axialvector interaction (assuming parity to be conserved) can be expected. The experimental angular correlation electronneutrino agrees best with that expected from the tensor variant. This conclusion confirms the results of Rusted and Rabi.
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-14-023588
- OSTI ID:
- 4147522
- Journal Information:
- Magyar Tudomanyos Akad. Mat. Fiz. Tudomanyok Osztalyanak Kozlemenyei, Vol. Vol: 8; Other Information: Orig. Receipt Date: 31-DEC-60; Related Information: Translated from Referat. Zhur. Fiz. No. 6, 1959, abstract No. 12438
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
AIR
ALPHA PARTICLES
ANGULAR DISTRIBUTION
BERYLLIUM 9
BERYLLIUM HYDROXIDES
BETA DECAY
CLOUD CHAMBERS
ELECTRONS
ENERGY
HELIUM 6
INTERACTIONS
LITHIUM 6
MEASURED VALUES
NEUTRINOS
NEUTRON SOURCES
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
PERFORMANCE
PHOTOGRAPHY
POLONIUM
POWDERS
PRESSURE
RECOILS
SPIN
TRANSIENTS
VECTORS