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Nuclear-structure effects in a microscopic theory for (α, α′) reactions in even-even tin isotopes

Эффекты ядерной структуры в микроскопической теории (α, α′) реакций в четночетных иэотопах олова

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Il Nuovo Cimento A (1965-1970)

Summary

We study (α, α′) transitions in tin isotopes as compared to electromagnetic analogue ones and test their sensitivity to microscopic nuclear-structure details. In particular the role of the radial shape of the single-particle shell model state is investigated by comparing a harmonic-oscillator potential with a Woods-Saxon one. A microscopic model for the nuclear many-body wave functions is used in the framework of the quasi-particle (qp) theory: the effect of four qp in the nuclear wave function is explored.

Riassunto

Si studiano le transizioni (α, α′) negli isotopi dello stagno, confrontandole con le analoghe transizioni elettromagnetiche, e si prova la loro sensibilità alle caratteristiche dettagliate della struttura microscopica del nucleo. In particolare si analizza il ruolo delle funzioni d’onda radiali di singola particella del modello a shell confrontando un potenziale di oscillatore armonico con uno di Woods e Saxon. Per le funzioni d’onda nucleari si è fatto uso di un modello microscopico nell’ambito della teoria di quasi particelle: è stato studiato l’effetto delle quattro quasi particelle nelle funzioni d’onda nucleari.

Реэюме

Мы иэучаем (α, α′) переходы в иэотопах олова и исследуем их чувствительность к микроскопическим деталям ядерной структуры. В частности, аналиэируется роль радиальной формы одночастичного состояния в оболочечной модели посредством сравнения гармонического осциллятора с потенциалом Вудса-Саксона. Испольэуется микроскопическая модель для ядерных многочастичных волновых функций в рамках кваэичастичной (gp) теории. Исследуется зффект четырех кваэичастиц в ядерной волновой функции.

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Bonsignori, G., Cannata, F., Fratamico, G. et al. Nuclear-structure effects in a microscopic theory for (α, α′) reactions in even-even tin isotopes. Nuov Cim A 54, 165–184 (1979). https://doi.org/10.1007/BF02899786

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  • DOI: https://doi.org/10.1007/BF02899786

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