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Normalizing the enhanced generalized superfluid model of nuclear level density

  • Regular Article - Theoretical Physics
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Abstract

A normalization procedure has been applied to improve the descriptive and predictive power of the enhanced generalized superfluid (EGS) model for the nuclear level density (NLD). In this procedure, the EGS model is normalized based on the experimental average level spacing at the neutron binding energy \(D_0\) and the cumulative number of experimental discrete levels in the low-energy region N(E). The values of normalization parameters are determined by systematically analyzing a set of 288 nuclei from \(^{25}\)Mg to \(^{251}\)Cf, whose experimental \(D_0\) and N(E) data are available. The systematical analysis permits to determine the values of the normalization parameters for any nucleus. The descriptive and predictive power of the normalized EGS (NEGS) model are demonstrated by making the comparison of the NEGS NLDs with the experimental NLD data of 70 nuclei obtained from the Oslo method. The results obtained show that the NEGS model describes reasonably well almost all the experimental NLDs and should be better used in the reaction codes than the conventional EGS, in particular for nuclei whose experimental NLDs are not available.

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Data Availability Statement

This manuscript has no associated data or the data will not be deposited. [Authors’ comment: This is a theoretical work. All data generated in this work are contained in this published article.]

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Acknowledgements

This work was funded by the Ministry of Science and Technology (MOST) of Vietnam under the Program of Development in Physics (Grant No. DTDLCN.02/19) and the National Foundation for Science and Technology Development (NAFOSTED) of Vietnam (Grant No. 103.04-2019.371).

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, Dubna, Russia

    Vu Duc Cong

  2. Institute of Physics, Vietnam Academy of Science and Technology, Hanoi, Vietnam

    Vu Duc Cong & Le Hong Khiem

  3. Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Vietnam

    Tran Dong Xuan & Nguyen Quang Hung

  4. Faculty of Natural Sciences, Duy Tan University, Danang, 550000, Vietnam

    Tran Dong Xuan & Nguyen Quang Hung

  5. Dalat Nuclear Research Institute, Vietnam Atomic Energy Institute, Dalat, Vietnam

    Nguyen Xuan Hai & Nguyen Ngoc Anh

  6. Hanoi University of Science and Technology, Hanoi, Vietnam

    Pham Dinh Khang

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  1. Vu Duc Cong
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  2. Tran Dong Xuan
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  3. Nguyen Xuan Hai
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Correspondence to Vu Duc Cong or Nguyen Quang Hung.

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Communicated by Jerome Margueron.

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Cong, V.D., Xuan, T.D., Hai, N.X. et al. Normalizing the enhanced generalized superfluid model of nuclear level density. Eur. Phys. J. A 57, 304 (2021). https://doi.org/10.1140/epja/s10050-021-00615-4

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