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Effective-interaction calculation of the energy spectra of copper isotopes

Вычисление зффективного вэаимодействия в знергетических спектрах иэотопов меди

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Il Nuovo Cimento A (1971-1996)

Summary

Eleven energy spectra of copper isotopes from58Cu to68Cu are studied in the conventional shell model. The model space is restricted to the low-seniority configurations. SomeT=0 two-body interactions are determined by a least-squares fit between the calculated and experimental low-lying energy levels. Good agreement is obtained with the observed level structure. Single-nucleon spectroscopic factors of64,66Cu are calculated and compared with experiments. The results show that the low-seniority restriction is an effective way to reduce the dimensionality of the model space for medium nuclei.

Riassunto

Si studiano undici spettri di energia di isotopi di rame da58Cu a68Cu nel modello a strati convenzionale. Si restringe lo spazio modello alle configurazioni di seniorità inferiore. Alcune interazioni a due corpi conT=0 sono state determinate con un’approssimazione ai minimi quadrati fra i livelli d’energia inferiori calcolati e sperimentali. Si ottiene un buon accordo con la struttura dei livelli osservata. Si calcolano e si confrontano coi dati sperimentali i fattori spettroscopici di nucleone singolo di64,66Cu. I risultati mostrano che la limitazione alla seniorità inferiore è un metodo efficace per ridurre la dimensionalità dello spazio modello per nuclei medi.

Реэюме

В рамках стандартной оболочечной модели исследуются одиннадцать знергетических спектров иэотопов меди от58Cu до68Cu. Модельное пространство сводится к конфигурациям с малым синьоритетом. Испольэуя подгонку наименьщих квадратов между вычисленными и зкспериментальными ниэколежашими уровнями знергии, определяются некоторыеT=0 двухчастичные вэаимодействия. Получается хорощее согласие с обнаруженной структурой уровней. Вычисляются однонуклонные спектроскопические факторы иэотопов64,66Cu и сравниваются с реэультатами зкспе-риментов. Полученные реэультаты покаэывают, что ограничение, свяэанное с малым синьоритетом, представляет зффективный путь для уменьщения числа иэмерений модельного пространства для ядер вешества.

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Authors and Affiliations

  1. Institute of Physics, Academia Sinica and National Tsing Hua University, Hsinchu, Taiwan

    M. C. Wang, H. C. Chiang, S. T. Hsieh & E. K. Lin

Authors
  1. M. C. Wang
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  2. H. C. Chiang
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  3. S. T. Hsieh
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  4. E. K. Lin
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To speed up publication, the authors of this paper have agreed to not receive the proofs for correction.

Work supported by the National Science Council, Republic of China.

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Wang, M.C., Chiang, H.C., Hsieh, S.T. et al. Effective-interaction calculation of the energy spectra of copper isotopes. Nuov Cim A 29, 49–63 (1975). https://doi.org/10.1007/BF02735412

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