Elsevier

Nuclear Physics A

Volume 458, Issue 4, 20 October 1986, Pages 605-619
Nuclear Physics A

Strangeness exchange reactions with the recoil corrected continuum shell model

https://doi.org/10.1016/0375-9474(86)90189-2Get rights and content

Abstract

The procedure for calculating strangeness exchange cross sections in the recoil corrected continuum shell model formalism is developed. Cross sections are compared with existing 12ΛC, 16ΛO and 40ΛCa data and agreement is good. The calculated 16ΛO, 4° spectrum demonstrated the ability of the RCCSM to calculated bound states, resonances, and quasi-free scattering in one formalism. A search for collective states was performed. After proper removal of center-of-mass excitations, no substantial collectivity was found. A survey of stretched excitations was performed. The 16ΛO(3+) and 28ΛSi(5+) states were found to be narrow and contain more than 85% of the 1pΛ 1hn strength. They are therefore, good candidates for initial (γ, K+) studies. In contrast, only 50% of the 1pΛ 1hn strength for 12ΛC(3+) will be observed in one state, with the remaining strength spread over several MeV with weak structure.

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    Supported in part by a grant from Research Corporation and the National Science Foundation under grant PHY-8317084.

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    Permanent address: Nankai University, Tianjin, China.

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