Summary
The depth of the imaginary part of the optical potential in nuclear matter is calculated for incident Λ particles having laboratory energies less than 80 MeV with an assumed real well 35 MeV deep. This imaginary depth exceeds that for incident neutrons for low energies, being several times as large at zero energy. For the intermediate and higher energies considered, the depth for Λ’s is estimated to be less than that for neutrons. Surface absorption in finite nuclei is expected to be relatively less important for incident Λ’s than for incident nucleons.
Riassunto
Per particelle Λ incidenti con energia nel s.l. minori di 80 MeV si calcola la profondità della parte immaginaria del loro potenziale ottico in materia nucleare, con profondità della buca reale presunta di 35 MeV. Tale profondità immaginaria supera per le basse energie quella per i neutroni incidenti, essendo per energia nulla diverse volte maggiore. Considerando energie intermedie e maggiori la profondità per i Λ si stima minore di quella pei neutroni. Ci si attende che nei nuclei finiti l’assorbimento superficiale sia relativamente meno importante per i Λ che per i nucleoni incidenti.
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This work was done while two of us (BWD and BR) were temporary members of the listed institutions.
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Downs, B.W., Ram, B. & Ware, W.E. Imaginary part of the Λ optical potential in nuclear matter. Nuovo Cim 35, 852–859 (1965). https://doi.org/10.1007/BF02739347
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DOI: https://doi.org/10.1007/BF02739347