$^{11}$B states above the $α$-decay threshold studied via $^{10}$B$(d,p){}^{11}$B
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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| author | Kuchera, A. N. Ryan, G. Selby, G. Snider, D. Anderson, S. Almaraz-Calderon, S. Baby, L. T. Brown, B. A. Hanselman, K. Lopez-Saavedra, E. Macon, K. T. McCann, G. W. Kemper, K. W. Spieker, M. Wiedenhöver, I. |
| author_facet | Kuchera, A. N. Ryan, G. Selby, G. Snider, D. Anderson, S. Almaraz-Calderon, S. Baby, L. T. Brown, B. A. Hanselman, K. Lopez-Saavedra, E. Macon, K. T. McCann, G. W. Kemper, K. W. Spieker, M. Wiedenhöver, I. |
| contents | The resonance region of $^{11}$B covering excitation energies from 8.4 MeV to 13.6 MeV was investigated with the $(d,p)$ reaction performed on an enriched $^{10}$B target at the Florida State University Super-Enge Split-Pole Spectrograph of the John D. Fox Superconducting Linear Accelerator Laboratory. Complementary measurements were performed with a target enriched in $^{11}$B to identify possible $^{12}$B contaminants in the $(d,p)$ reaction. Four strongly populated $^{11}$B states were observed above the $α$-decay threshold. Angular distributions were measured and compared to DWBA calculations to extract angular momentum transfers and $^{10}\mathrm{B}\left(3^+\right)+n$ spectroscopic factors. The recently observed and heavily discussed resonance at 11.4 MeV in $^{11}$B was not observed in this work. This result is consistent with the interpretation that it is predominantly a $^{10}\mathrm{Be}\left(0^+\right)+p$ resonance with a possible additional $^{7}\mathrm{Li}+α$ contribution. The predicted $^{10}\mathrm{B}\left(3^+\right)+n$ resonance at 11.6 MeV, analogous to the 11.4-MeV proton resonance, was not observed either. Upper limits for the $^{10}\mathrm{B}\left(3^+\right)+n$ spectroscopic factors of the 11.4-MeV and 11.6-MeV states were determined. In addition, supporting configuration interaction shell model calculations with the effective WBP interaction are presented. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2411_09831 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | $^{11}$B states above the $α$-decay threshold studied via $^{10}$B$(d,p){}^{11}$B Kuchera, A. N. Ryan, G. Selby, G. Snider, D. Anderson, S. Almaraz-Calderon, S. Baby, L. T. Brown, B. A. Hanselman, K. Lopez-Saavedra, E. Macon, K. T. McCann, G. W. Kemper, K. W. Spieker, M. Wiedenhöver, I. Nuclear Experiment Nuclear Theory The resonance region of $^{11}$B covering excitation energies from 8.4 MeV to 13.6 MeV was investigated with the $(d,p)$ reaction performed on an enriched $^{10}$B target at the Florida State University Super-Enge Split-Pole Spectrograph of the John D. Fox Superconducting Linear Accelerator Laboratory. Complementary measurements were performed with a target enriched in $^{11}$B to identify possible $^{12}$B contaminants in the $(d,p)$ reaction. Four strongly populated $^{11}$B states were observed above the $α$-decay threshold. Angular distributions were measured and compared to DWBA calculations to extract angular momentum transfers and $^{10}\mathrm{B}\left(3^+\right)+n$ spectroscopic factors. The recently observed and heavily discussed resonance at 11.4 MeV in $^{11}$B was not observed in this work. This result is consistent with the interpretation that it is predominantly a $^{10}\mathrm{Be}\left(0^+\right)+p$ resonance with a possible additional $^{7}\mathrm{Li}+α$ contribution. The predicted $^{10}\mathrm{B}\left(3^+\right)+n$ resonance at 11.6 MeV, analogous to the 11.4-MeV proton resonance, was not observed either. Upper limits for the $^{10}\mathrm{B}\left(3^+\right)+n$ spectroscopic factors of the 11.4-MeV and 11.6-MeV states were determined. In addition, supporting configuration interaction shell model calculations with the effective WBP interaction are presented. |
| title | $^{11}$B states above the $α$-decay threshold studied via $^{10}$B$(d,p){}^{11}$B |
| topic | Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2411.09831 |