The Ti-44(alpha, p) reaction and its implication on the Ti-44 yield in supernovae

Authors
Sonzogni, AA Rehm, KE Ahmad, I Borasi, F Bowers, DL Brumwell, F Caggiano, J Davids, CN Greene, JP Harss, B Heinz, A Henderson, D Janssens, RVF Jiang, CL McMichael, G Nolen, J Pardo, RC Paul, M Schiffer, JP Segel, RE Seweryniak, D Siemssen, RH Truran, JW Uusitalo, J Wiedenhover, I Zabransky, B
Citation
Aa. Sonzogni et al., The Ti-44(alpha, p) reaction and its implication on the Ti-44 yield in supernovae, PHYS REV L, 84(8), 2000, pp. 1651-1654
Citations number
27
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
84
Issue
8
Year of publication
2000
Pages
1651 - 1654
Database
ISI
SICI code
0031-9007(20000221)84:8<1651:TTPRAI>2.0.ZU;2-N
Abstract
Cross sections for the Ti-44(alpha, p)V-47 reaction which significantly aff ects the yield of Ti-41 in supernovae were measured in the energy range 5.7 MeV less than or equal to E-c.m. less than or equal to 9 MeV, using a beam of radioactive Ti-44. The cross sections and the deduced astrophysical rea ction rates are larger than the results from theoretical calculations by ab out a factor of 2. The implications of this increase in the reaction rate f or the search of supernovae using space-based gamma detectors are discussed .