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APS » Journals » Phys. Rev. C » Volume 58 » Issue 6
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Phys. Rev. C 58, 3677–3687 (1998)

Neutrino absorption efficiency of an 40Ar detector from the β decay of 40Ti

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M. Bhattacharya, A. García, and N. I. Kaloskamis*
University of Notre Dame, Notre Dame, Indiana 46556

E. G. Adelberger and H. E. Swanson
University of Washington, Seattle, Washington 98195

R. Anne, M. Lewitowicz, M. G. Saint-Laurent, and W. Trinder
GANIL, BP 5027, F-14021 Caen Cedex, France

C. Donzaud, D. Guillemaud-Mueller, S. Leenhardt, A. C. Mueller, F. Pougheon, and O. Sorlin
Institut de Physique Nucléaire, IN2P3-CNRS, F-91406 Orsay Cedex, France

Received 4 August 1998; published in the issue dated December 1998

We studied β-delayed proton and γ emission from 40Ti decay. We found t1/2=52.7±1.5 ms and observed 28 proton groups that we organized into a 40Ti decay scheme with 21 branches. The reduced transition strengths of these decay branches were then used to compute the neutrino detection efficiency of the ICARUS liquid argon time-projection chamber. We found 40Ar(ν,e) cross sections (for an electron energy threshold W=5 MeV) of (14.0±0.3)×10-43 cm2, (75.1±1.8)×10-43 cm2, and (3.2±0.1)×10-41 cm2 for 8B neutrinos, hep neutrinos, and supernova neutrinos characterized by a temperature of 4.5 MeV.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.58.3677
DOI:
10.1103/PhysRevC.58.3677
PACS:
23.40.Hc, 26.65.+t, 27.40.+z

*Present address: MIT-Bates Linear Accelerator Center, Middleton, MA 01949.

 
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