Abstract.
Results of ab initio no-core, shell model calculations for the photonuclear cross section of 10B are presented using realistic two-nucleon (NN) chiral forces up to next-to-next-to-next-order (N3LO) softened by the similarity renormalization group method (SRG) with \( \lambda= 2.02\) fm-1. The electric-dipole response function is calculated using the Lanczos method, with the effects of the continuum included via neutron escape widths derived from R-matrix theory and using the Lorentz integral transform method. The calculated cross section agrees well with experimental data in terms of structure as well as in absolute peak height, \( \sigma_{\max}=4.85\) mb at photon energy \( \omega= 23.61\) MeV, and integrated cross section 85.36 MeV. mb. We also test the Brink hypothesis by calculating the electric-dipole response for the first nine positive-parity states with \( J \ne 0\) in 10B and verify that dipole excitations built upon the ground and excited states have similar characteristics.
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Communicated by N. Alamanos
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This manuscript has no associated data or the data will not be deposited. [Authors’ comment: The experimental data shown in fig. 5 were obtained from the EXFOR data compilation https://www.nndc.bnl.gov/exfor. All other data generated in this study are contained in this published article.]
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Kruse, M.K.G., Ormand, W.E. & Johnson, C.W. No-core shell model calculations of the photonuclear cross section of 10B. Eur. Phys. J. A 55, 225 (2019). https://doi.org/10.1140/epja/i2019-12905-1
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DOI: https://doi.org/10.1140/epja/i2019-12905-1