Quasifree Neutron Knockout from ^{54}Ca Corroborates Arising N=34 Neutron Magic Number.

Quasifree Neutron Knockout from ^{54}Ca Corroborates Arising N=34 Neutron Magic Number.
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DOI：
10.1103/physrevlett.123.142501
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发表时间：
2019-09
期刊：
Physical review letters
影响因子：
8.6
通讯作者：
S. Chen;J. Lee;P. Doornenbal;A. Obertelli;C. Barbieri;Y. Chazono;P. Navrátil;K. Ogata;T. Otsuka;F. Raimondi;V. Somà;Y. Utsuno;K. Yoshida;H. Baba;F. Browne;D. Calvet;F. Château;N. Chiga;A. Corsi;M. L. Cortés;A. Delbart;J. Gheller;A. Giganon;A. Gillibert;C. Hilaire;T. Isobe;J. Kahlbow;T. Kobayashi;Y. Kubota;V. Lapoux;H. Liu;T. Motobayashi;I. Murray;H. Otsu;V. Panin;N. Paul;W. Rodriguez;H. Sakurai;M. Sasano;D. Steppenbeck;L. Stuhl;Y. Sun;Y. Togano;T. Uesaka;K. Wimmer;K. Yoneda;N. Achouri;O. Aktaş;T. Aumann;L. X. Chung;F. Flavigny;S. Franchoo;I. Gašparić;R. Gerst;J. Gibelin;K. Hahn;D. Kim;T. Koiwai;Y. Kondo;P. Koseoglou;C. Lehr;B. Linh;T. Lokotko;M. Maccormick;K. Moschner;T. Nakamura;S. Park;D. Rossi;E. Sahin;D. Sohler;P. Söderström;S. Takeuchi;H. Törnqvist;V. Vaquero;V. Wagner;S. Wang;V. Werner;X. Xu;H. Yamada;D. Yan;Z. Yang;M. Yasuda;L. Zanetti
S. Chen;J. Lee;P. Doornenbal;A. Obertelli;C. Barbieri;Y. Chazono;P. Navrátil;K. Ogata;T. Otsuka;F. Raimondi;V. Somà;Y. Utsuno;K. Yoshida;H. Baba;F. Browne;D. Calvet;F. Château;N. Chiga;A. Corsi;M. L. Cortés;A. Delbart;J. Gheller;A. Giganon;A. Gillibert;C. Hilaire;T. Isobe;J. Kahlbow;T. Kobayashi;Y. Kubota;V. Lapoux;H. Liu;T. Motobayashi;I. Murray;H. Otsu;V. Panin;N. Paul;W. Rodriguez;H. Sakurai;M. Sasano;D. Steppenbeck;L. Stuhl;Y. Sun;Y. Togano;T. Uesaka;K. Wimmer;K. Yoneda;N. Achouri;O. Aktaş;T. Aumann;L. X. Chung;F. Flavigny;S. Franchoo;I. Gašparić;R. Gerst;J. Gibelin;K. Hahn;D. Kim;T. Koiwai;Y. Kondo;P. Koseoglou;C. Lehr;B. Linh;T. Lokotko;M. Maccormick;K. Moschner;T. Nakamura;S. Park;D. Rossi;E. Sahin;D. Sohler;P. Söderström;S. Takeuchi;H. Törnqvist;V. Vaquero;V. Wagner;S. Wang;V. Werner;X. Xu;H. Yamada;D. Yan;Z. Yang;M. Yasuda;L. Zanetti
中科院分区：
物理与天体物理1区
文献类型：
--
作者：
S. Chen;J. Lee;P. Doornenbal;A. Obertelli;C. Barbieri;Y. Chazono;P. Navrátil;K. Ogata;T. Otsuka;F. Raimondi;V. Somà;Y. Utsuno;K. Yoshida;H. Baba;F. Browne;D. Calvet;F. Château;N. Chiga;A. Corsi;M. L. Cortés;A. Delbart;J. Gheller;A. Giganon;A. Gillibert;C. Hilaire;T. Isobe;J. Kahlbow;T. Kobayashi;Y. Kubota;V. Lapoux;H. Liu;T. Motobayashi;I. Murray;H. Otsu;V. Panin;N. Paul;W. Rodriguez;H. Sakurai;M. Sasano;D. Steppenbeck;L. Stuhl;Y. Sun;Y. Togano;T. Uesaka;K. Wimmer;K. Yoneda;N. Achouri;O. Aktaş;T. Aumann;L. X. Chung;F. Flavigny;S. Franchoo;I. Gašparić;R. Gerst;J. Gibelin;K. Hahn;D. Kim;T. Koiwai;Y. Kondo;P. Koseoglou;C. Lehr;B. Linh;T. Lokotko;M. Maccormick;K. Moschner;T. Nakamura;S. Park;D. Rossi;E. Sahin;D. Sohler;P. Söderström;S. Takeuchi;H. Törnqvist;V. Vaquero;V. Wagner;S. Wang;V. Werner;X. Xu;H. Yamada;D. Yan;Z. Yang;M. Yasuda;L. Zanetti

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本文测量了~（54）Ca束轰击液氢靶的准自由单中子敲除反应的排它截面和动量分布。与在^{53}Ca激发中观察到的f_{5/2}态相比，p_{3/2}态的截面明显更大，这为N=34壳层闭合的性质提供了直接证据。这一发现证实了富中子钙同位素中新壳层闭合的产生。扭曲波脉冲近似反应形式主义与壳模型计算使用有效的GXPF 1Bs相互作用和从头计算同意我们的实验结果。获得的横向和平行的动量分布证明了准自由的一个中子敲除在厚液氢靶上的逆运动学的灵敏度与反应顶点重建到最终状态的自旋宇称分配。
Exclusive cross sections and momentum distributions have been measured for quasifree one-neutron knockout reactions from a ^{54}Ca beam striking on a liquid hydrogen target at ∼200 MeV/u. A significantly larger cross section to the p_{3/2} state compared to the f_{5/2} state observed in the excitation of ^{53}Ca provides direct evidence for the nature of the N=34 shell closure. This finding corroborates the arising of a new shell closure in neutron-rich calcium isotopes. The distorted-wave impulse approximation reaction formalism with shell model calculations using the effective GXPF1Bs interaction and ab initio calculations concur our experimental findings. Obtained transverse and parallel momentum distributions demonstrate the sensitivity of quasifree one-neutron knockout in inverse kinematics on a thick liquid hydrogen target with the reaction vertex reconstructed to final state spin-parity assignments.