Publication:
Full distribution of clusters with universal couplings and in-medium effects

Дата
2019
Авторы
Pais, Helena
Gulminelli, Francesca
Providencia, Constanca
Roepke, Gerd
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Научные группы
Организационные подразделения
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Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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Аннотация
Light and heavy clusters are calculated for asymmetric warm nuclear matter in a relativistic mean-field approach. In-medium effects, introduced via a universal cluster-meson coupling, and a binding energy shift contribution, calculated in a Thomas-Fermi approximation, were taken into account. This work considers, besides the standard lightest bound clusters He-4, He-3, H-3, and H-2, also stable and unstable clusters with higher number of nucleons, in the range 5 <= A <= 12, as it is natural that heavier clusters also form in core-collapse supernova matter, before the pasta phases set in. We show that these extra degrees of freedom contribute with non-negligible mass fractions to the composition of nuclear matter, and may prevail over deuterons and alpha particles at high density in strongly asymmetric matter, and not too high temperatures. The presence of the light clusters reduces the contribution of heavy clusters to a much smaller density range, and to a smaller mass fraction.
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Full distribution of clusters with universal couplings and in-medium effects / Pais, Helena [et al.] // Physical Review C. - 2019. - 99. - № 5. - 10.1103/PhysRevC.99.055806
URI
https://www.doi.org/10.1103/PhysRevC.99.055806
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85065863747&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000467727100004
 https://openrepository.mephi.ru/handle/123456789/18029
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