Search for massive neutrinos in the recoil spectrum of {sup 37}Cl following electron capture decay of {sup 37}Ar

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:387247

Hindi, M M; Bardayan, D W; Kozub, R L; Robinson, S J ^[1]

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1. and others

We are developing an experiment to measure the spectrum of recoil velocities of {sup 37}CI ions following the electron capture (EC) decay of {sup 37}Ar. One of the initial aims of this experiment is to search for massive neutrinos (m{sub v} {approximately} 200-250 keV) which might be emitted in the decay, with a mixing probability of < 0.3%. A 300 mCi {sup 37}Ar source was produced via the {sup 36}Ar(n,{gamma}) reaction at the BNL reactor. The gas was bled into an ultra high vacuum system at MSU and 1-2 monolayers were adsorbed on a Au-coated Si(111) surface cooled to 20 K. The Auger electrons associated with the EC decay of {sup 37}Ar were detected in a Channeltron detector. The recoiling {sup 37}Cl ions were detected in a microchannel-plate detector. We are currently preparing a fresh {sup 37}Ar sample, and plan to measure the time-of-flight spectrum of the recoils by detecting them in delayed coincidence with the Auger electrons.

• DOE Contract Number: FG05-87ER40314
• OSTI ID: 387247
• Report Number(s): CONF-931044--; CNN: Grant DMR 91-07854
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 9 Vol. 38; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
66 PHYSICS
ARGON 37
AUGER ELECTRON SPECTROSCOPY
CHLORINE 37
ELECTRON CAPTURE DECAY
NEUTRINO DETECTION