Nuclear Data Sheets for A=47

Astrophysical Gamma Ray Emission Lines

“…The derived values of e/p were found to be generally larger than the corresponding e/p's obtained from observations of solar flare particle events in interplanetary space. Such interplanetary e/p observations have been used to distinguish two classes of solar flare particle events (Cane, McGuire and von Rosenvinge 1986;). Impulsive events, for which the associated soft X-ray emission is of relatively short duration, have large e/p ratios; gradual events, for which the soft X-rays last longer, exhibit smaller values of e/p.…”

“…Another important radioisotope is 57 Co, resulting from the decay of 57 Ni produced by neutron capture onto 56 Ni. 57 Co decays with a longer mean life of 392 days, emitting two major lines (Burrows and Bhat 1986) at 0.1221 MeV (85.9%) and 0.1365 MeV (10.3%), which can be used to study the neutron flux during nucleosynthesis (Clayton 1974).…”

“…This has led to extensive modifications of the supernova models to explore the causes and effects of mixing on both the explosive nucleosynthesis and the ejecta dynamics (e.g. Nomoto et al 1988;Pinto and Woosley 1988;Bussard et al 1989). …”

“…Acceleration by the shocks associated with the winds of young O and B stars was proposed by Nath and Biermann (1994), while Bykov and Bloemen (1994) proposed that the acceleration is due to the shocks produced by colliding stellar winds and supernova explosions. We have proposed (Ramaty et al 1995b) that the pick up ions resulting from the breakup of interstellar grains could be the dominant injection process to any of these acceleration mechanisms.…”

Cr49: Towards full spectroscopy up to 4 MeV

“…It was formerly shown that shell model (SM) calculations are able to reproduce the 49 Cr ground state (gs) band and that its rotational features at low spin can be described by the particle-rotor model (PRM) as a K=5/2 − band based on the ν[312]5/2 − Nilsson orbital [1]. A rotational behavior was already recognized in the most recent Nuclear Data Sheets (NDS) compilation [2], where, relying on few experimental levels at low excitation energy, sidebands with K π =1/ frame of a research using heavy ion induced fusion reactions, evidence of two high-K 3-qp rotational bands with K π =13/2 − and K π = 13/2 + has been found [3,4]. They have been interpreted with the prolate Nilsson diagram as due to the excitation of a proton to the empty [312]5/2 − orbital from the [321]3/2 − or the [202]3/2 + one, respectively, followed by the recoupling to the maximum value of K of the three unpaired nucleons.…”