Yield of low-lying high-spin states at optimal charge-particle reactions
Skobeltsyn Institute of Nuclear Physics, Moscow State University, 119992, Moscow, Russia
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Accepted: 29 March 2005
Published online: 9 August 2005
Isomeric cross-section ratios (ICSR) σg/σm for the 4, 6, 8He-induced reactions of Sr isotopes giving rise to 89mg Zr isomeric pair ( J π = 9/2+, T 1/2 (g) = 3.27 d; J π = 1/2-, T 1/2 (m) = 4.18min) are calculated using a statistical model approach. ICSR of the reactions 86Sr(α, n)89mg Zr and 87Sr(α, 2n)89mg Zr measured by us earlier in the energy range E = 17-29MeV are used as a test. Calculations and analysis of ICSR of reactions produced by unstable projectiles are performed for the first time. The dependence of obtained values on the projectile neutron number is discussed.
PACS: 25.60.-t Reactions induced by unstable nuclei –
© Società Italiana di Fisica and Springer-Verlag, 2005