ISSN:
1434-601X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The beta-decay of Li8→Be8*→2α is especially suitable in neutrino recoil experiments on account of the large beta-decay energy available and on account of the subsequent break up of Be8* into two α-particles. For the angular correlation between the antineutrino and the α-particle one obtains for our counter geometry and a Gamow-Teller interaction the angular distributionw(v)dv=(1+b v/c 0.707 cosv)dv, whereb=−1 for axial vector interaction (A) orb=+1 for tensor interaction (T) and wherev is the angle between the direction of emission of the antineutrino and the α-particle. The measurement of the energy difference of the two α-particles in the Be8* decay, when the direction of the emission of the beta-particle is fixed, defines the angular correlation coefficientb. In this experiment the value ofb is found to be equal to −1.12±0.20, which shows axial vector interaction in the Gamow-Teller decay.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01326863
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