The 44Ti(alpha,p) reaction and its implication on the 44Ti yield in supernovae
Cross sections for the 44Ti(alpha,p)47V reaction which significantly affects the yield of 44Ti in supernovae were measured in the energy range 5.7 MeV</=E(c.m.)</=9 MeV, using a beam of radioactive 44Ti. The cross sections and the deduced astrophysical reaction rates are larger than the results from theoretical calculations by about a factor of 2. The implications of this increase in the reaction rate for the search of supernovae using space-based gamma detectors are discussed.
Sonzogni
AA
Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA.
Rehm
KE
Ahmad
I
Borasi
F
Bowers
DL
Brumwell
F
Caggiano
J
Davids
CN
Greene
JP
Harss
B
Heinz
A
Henderson
D
Janssens
RV
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