Extension of the ratio method to proton-rich nuclei
Extension of the ratio method to proton-rich nuclei
复制标题
将比率法扩展到富质子核
DOI：
10.1088/1361-6471/ab355e
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发表时间：
2018-05
期刊：
影响因子：
--
通讯作者：
Capel P.
中科院分区：
文献类型：
--
作者：
Yun X. Y.;Colomer F.;Pang D. Y.;Capel P.
本文提出了一种改进单中子晕核反应研究的比值方法。通过取两个过程的角分布之比，即破碎和弹性散射，这个新的观测值几乎与反应机制无关，因此比每个单个过程的横截面对弹丸结构更敏感。我们研究了扩展的比率方法，以丰富的质子核，也探索了最佳的实验条件，测量这个新的观察。我们比较准确的动力学计算的反应，质子丰富的射弹的预测的比率方法。我们使用的动力学程函近似，提供了良好的结果，这类反应在中能。在44 MeV/核子下，对典型的单质子晕核8B在Pb、Ni和C靶上的实验表明，由于价质子与靶之间的库仑作用不可忽略，该比值的作用不如中子晕。尽管如此，比值法仍然提供了有关稳定谷富质子一侧的核结构的相关信息。有趣的是，如果在抛射体连续体中考虑能量范围或仓，则该方法不受影响。这使得通过增加破碎横截面更容易通过实验测量该比率。我们还将我们的分析扩展到17 F，25 Al和27 P，它们的研究对核天体物理和核结构都很有意义。我们表明，虽然不如一个中子晕核精确，核结构的信息可以推断出的比率方法适用于异国情调的质子丰富的核。特别是，当价质子松散地束缚在s或p轨道上时，即质子晕核，可以通过这种新的可观察反应获得详细的结构信息。
The ratio method has been developed to improve the study of one-neutron halo nuclei through reactions. By taking the ratio of angular distributions for two processes, viz. breakup and elastic scattering, this new observable is nearly independent of the reaction mechanism and hence much more sensitive to the projectile structure than the cross sections for each single process. We study the extension of the ratio method to proton-rich nuclei and also explore the optimum experimental conditions for measuring this new observable. We compare accurate dynamical calculations of reactions for proton-rich projectiles to the prediction of the ratio method. We use the dynamical eikonal approximation that provides good results for this kind of reactions at intermediate energy. Our tests for 8B, an archteypical one-proton halo nucleus, on Pb, Ni, and C targets at 44 MeV/nucleon show that, the ratio works less well than for neutron halos due to the non-negligible Coulomb interaction between the valence proton and the target. Nevertheless, the ratio method still provides pertinent information about nuclear structure on the proton-rich side of the valley of stability. Interestingly the method is not affected if energy ranges-or bins-are considered in the projectile continuum. This makes the ratio easier to measure experimentally by increasing the breakup cross section. We also extend our analysis to 17F, 25Al, and 27P, whose study is of interest to both nuclear astrophysics and nuclear structure. We show that, albeit less precise than for one-neutron halo nuclei, nuclear-structure information can be inferred from the ratio method applied to exotic proton-rich nuclei. In particular, when the valence proton is loosely bound in an $s$ or $p$ orbital, viz. for proton halo nuclei, detailed structure information can be obtained through this new reaction observable.
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影响因子：
8.6
作者：
A. Ozawa;Toshio Kobayashi;Takeshi Suzuki;Koichi Yoshida;I. Tanihata
通讯作者：
A. Ozawa;Toshio Kobayashi;Takeshi Suzuki;Koichi Yoshida;I. Tanihata
影响因子：
8.6
作者：
R. Kanungo;W. Horiuchi;G. Hagen;G. Jansen;P. Navrátil;F. Ameil;J. Atkinson;Y. Ayyad;D. Cortina-Gil;I. Dillmann;A. Estrade;A. Evdokimov;F. Farinon;H. Geissel;G. Guastalla;R. Janik;M. Kimura;R. Knöbel;J. Kurcewicz;Y. Litvinov;M. Marta;M. Mostazo;I. Mukha;C. Nociforo;H. Ong;S. Pietri;A. Prochazka;C. Scheidenberger;B. Sitar;P. Strmen;Y. Suzuki;M. Takechi;J. Tanaka;I. Tanihata;S. Terashima;J. Vargas;H. Weick;J. Winfield
通讯作者：
R. Kanungo;W. Horiuchi;G. Hagen;G. Jansen;P. Navrátil;F. Ameil;J. Atkinson;Y. Ayyad;D. Cortina-Gil;I. Dillmann;A. Estrade;A. Evdokimov;F. Farinon;H. Geissel;G. Guastalla;R. Janik;M. Kimura;R. Knöbel;J. Kurcewicz;Y. Litvinov;M. Marta;M. Mostazo;I. Mukha;C. Nociforo;H. Ong;S. Pietri;A. Prochazka;C. Scheidenberger;B. Sitar;P. Strmen;Y. Suzuki;M. Takechi;J. Tanaka;I. Tanihata;S. Terashima;J. Vargas;H. Weick;J. Winfield
影响因子：
--
作者：
M. Freer
通讯作者：
M. Freer
DOI：
10.1016/0370-1573(91)90039-o
发表时间：
1991-03
期刊：
Physics Reports
影响因子：
--
作者：
R. Varner;R. Varner;W. J. Thompson;W. J. Thompson;T. McAbee;T. McAbee;E. Ludwig;E. Ludwig
通讯作者：
R. Varner;R. Varner;W. J. Thompson;W. J. Thompson;T. McAbee;T. McAbee;E. Ludwig;E. Ludwig
影响因子：
3.1
作者：
N. Fukuda;T. Nakamura;N. Aoi;N. Imai;M. Ishihara;T. Kobayashi;H. Iwasaki;T. Kubo;A. Mengoni;M. Notani;H. Otsu;H. Sakurai;S. Shimoura;T. Teranishi;Y. Watanabe;K. Yoneda
通讯作者：
N. Fukuda;T. Nakamura;N. Aoi;N. Imai;M. Ishihara;T. Kobayashi;H. Iwasaki;T. Kubo;A. Mengoni;M. Notani;H. Otsu;H. Sakurai;S. Shimoura;T. Teranishi;Y. Watanabe;K. Yoneda