Attempt to observe the Cl$^{37}(\bar{\nu}e^-)$Ar$^{37}$ reaction induced by reactor antineutrinos

Davis, Raymond, Jr.; Harmer, Don S.

Attempt to observe the Cl $^{37}(\bar{\nu}e^-)$ Ar $^{37}$ reaction induced by reactor antineutrinos

Raymond Davis, Jr.
(
- Brookhaven
)
,
Don S. Harmer
(
- Brookhaven and
- Georgia Tech
)

Apr, 1959

1 page

Published in:

Bull.Am.Phys.Soc. 4 (1959) 217

Contribution to:

American Physical Society Spring Meeting

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Abstract:

An experiment has been performed to test whether fission product antineutrinos will invert the electron capture decay of Ar

^{37}

by the reaction Cl

^{37}(\bar{\nu},e^-)

Ar

^{37}

. Three thousand gallons of carbon tetrachloride were exposed to the high antineutrino flux from a production reactor at the Savannah River plant. The argon-37 was isolated and counted in a low level counter. The cross section for this process was found to be less than 0.25 x 10

^{-45}

cm

^2

, a factor of 20 below the cross section calculated assuming neutrino-antineutrino identity. The result is consistent with the principle of lepton conservation. Argon-37 was observed in the experiment produced by cosmic radiation and fast neutrons. The Ar

^{37}

observed in the experiment can be used to set an upper limit on the product of the solar neutrino flux and the average cross section for the neutrino capture reaction:

\phi\bar{\sigma} < 1.1 \times 10^{-33}

disintegrations sec

^{-1}

.

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Attempt to observe the Cl37(νˉe−)^{37}(\bar{\nu}e^-)37(νˉe−)Ar37^{37}37 reaction induced by reactor antineutrinos

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Attempt to observe the Cl $^{37}(\bar{\nu}e^-)$ Ar $^{37}$ reaction induced by reactor antineutrinos