Primary gamma-ray spectra in 44Ti of astrophysical interest

Abstract

Primary gamma-ray spectra for a wide excitation-energy range have been extracted for 44Ti from particle-gamma coincidence data of the 46Ti(p,t gamma)44Ti reaction. These spectra reveal information on the gamma-decay pattern of the nucleus, and may be used to extract the level density and radiative strength function applying the Oslo method. Models of the level density and radiative strength function are used as input for cross-section calculations of the 40Ca(alpha,gamma)44Ti reaction. Acceptable models should reproduce data on the 40Ca(alpha,gamma)44Ti reaction cross section as well as the measured primary gamma-ray spectra. This is only achieved when a coherent normalization of the slope of the level density and radiative strength function is performed. Thus, the overall shape of the experimental primary gamma-ray spectra puts a constraint on the input models for the rate calculations.

14 pages, 13 figures

References in corpus (8)

• Analysis of possible systematic errors in the Oslo method
• The signature of 44Ti in Cassiopeia A revealed by IBIS/ISGRI on INTEGRAL
• Impact of a low-energy enhancement in the gamma-ray strength function on the radiative neutron-capture
• Nuclear level densities and gamma-ray strength functions in 44,45Sc
• Compilation of Giant Electric Dipole Resonances Built on Excited States
• Thermodynamic Properties of ${}^{56,57}$Fe
• Statistical structure and $\gamma$-decay properties of closed shell Pb nuclei
• Extraction of thermal and electromagnetic properties in 45Ti

Cited by in corpus (3)

• Nuclear Level Density and Gamma-Ray Strength Function of 43Sc
• Benchmark of many-body approaches for magnetic dipole transition strength
• Alpha-decay from ${}^{44}$Ti: A study of the microscopic clusterization