G-T strength distribution in f-p shell nuclei and {nu}{sub {ital e}} from stellar collapse
- Tata Institute of Fundamental Research, Bombay-400 005 (India)
The Gamow-Teller strength distribution in f-p shell nuclei is important in determining {ital e}{sup {minus}}-capture and {beta}-decay rates on neutron rich nuclei in presupernova and collapsing cores of massive stars. We use the recently available data for p-n and n-p reactions on some of these nuclei to generate a generalized relation for the centroid (in energy) of the G-T distribution in terms of nuclear mass number and neutron excess. We then calculate the energy spectrum of the electron-capture neutrinos which stream freely out of the collapsing star {ital without} {ital further} {ital interactions} (i.e., the pre-trapping neutrinos). The number and spectra of such neutrinos detectable through the charged current reaction on Deuterium in the Sudbury Neutrino Observatory has been computed to be {congruent}50 for a supernova explosion at 500 pc. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 165215
- Report Number(s):
- CONF-9407131--
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 327; ISSN 0094-243X; ISSN APCPCS
- Country of Publication:
- United States
- Language:
- English
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