Investigating the link between proton reaction cross sections and the quenching of proton spectroscopic factors in 48Ca
Investigating the link between proton reaction cross sections and the quenching of proton spectroscopic factors in 48Ca
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研究 48Ca 中质子反应截面与质子光谱因子猝灭之间的联系
DOI：
10.1016/j.physletb.2019.135027
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发表时间：
2019
影响因子：
4.4
通讯作者：
Dickhoff, W.H.
中科院分区：
文献类型：
--
作者：
Atkinson, M.C.;Dickhoff, W.H.
用非局域色散光学模型(DOM)计算了40Ca和48Ca的核子自能。通过实施连接自能的实部和虚部的色散关系，使用散射和结构数据来约束这些自能。同时计算束缚态和散射态的能力使这些自能处于一个独特的位置，以一致地描述排外敲除反应，如(e，e‘p)。本文的分析揭示了高能质子反应截面数据在限制描述(e，e‘p)截面所需的光谱因素方面的重要性。特别是，必须在不久的将来测量48Ca的高能质子反应截面数据，以便使用DOM明确地限制48Ca(e，e‘p)47K反应中光谱因子的猝灭。利用具有大中子过剩的稀有同位素束测量逆运动学中的质子反应截面，将对奇异核的质子光谱因子提供相应的约束。此外，DOM产生的谱函数表明，相对于40Ca，光谱因子的猝灭不仅是由于长程关联，而且部分原因是由于强烈的中子-质子相互作用，48Ca中的高动量质子增加。由这些谱函数计算了质子和中子在48Ca中的单粒子动量分布，证实了中子过剩导致高动量质子的比例高于中子。
The nucleon self-energies of 40 Ca and 48 Ca are determined using a nonlocal dispersive optical model (DOM). By enforcing the dispersion relation connecting the real and imaginary part of the self-energy, scattering and structure data are used to constrain these self-energies. The ability to calculate both bound and scattering states simultaneously puts these self-energies in a unique position to consistently describe exclusive knockout reactions such as (e, e′ p). The present analysis reveals the importance of high-energy proton reaction cross-section data in constraining spectroscopic factors required for the description of the (e, e′ p) cross sections. In particular, it is imperative that high-energy proton reaction cross-section data are measured for 48 Ca in the near future so that the quenching of the spectroscopic factors in the 48 Ca (e, e′ p) 47 K reaction can be unambiguously constrained using the DOM. Measurements of proton reaction cross sections in inverse kinematics employing rare isotope beams with large neutron excess will provide corresponding constraints on proton spectroscopic factors for exotic nuclei. Moreover, DOM generated spectral functions indicate that the quenching of spectroscopic factors compared to 40 Ca is not only due to long-range correlation, but also partly due to the increase in high-momentum protons in 48 Ca on account of the strong neutron-proton interaction. Single-particle momentum distributions of protons and neutrons in 48 Ca calculated from these spectral functions confirm that neutron excess causes a higher fraction of high-momentum protons than neutrons.
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影响因子：
8.6
作者：
L. Atar;S. Paschalis;C. Barbieri;C. Bertulani;P. D. Fernandez;M. Holl;M. Najafi;V. Panin;H. Alvarez-Pol;T. Aumann;V. Avdeichikov;S. Beceiro-Novo;D. Bemmerer;J. Benlliure;J. M. Boillos;K. Boretzky;M. Borge;M. Caamano;C. Caesar;E. Casarejos;W. Catford;J. Cederkäll;M. Chartier;L. Chulkov;D. Cortina-Gil;E. Cravo;R. Crespo;I. Dillmann;Z. Elekes;J. Enders;O. Ershova;A. Estrade;F. Farinon;L. Fraile;M. Freer;D. G. Redondo;H. Geissel;R. Gernhäuser;P. Golubev;K. Göbel;J. Hagdahl;T. Heftrich;M. Heil;M. Heine;A. Heinz;A. Henriques;A. Hufnagel;A. Ignatov;H. Johansson;B. Jonson;J. Kahlbow;N. Kalantar-Nayestanaki;R. Kanungo;A. Kelić-Heil;A. Knyazev;T. Kröll;N. Kurz;M. Labiche;C. Langer;T. Bleis;R. Lemmon;S. Lindberg;J. Machado;J. Marganiec-Gałązka;A. Movsesyan;E. Nácher;E. Nikolskii;T. Nilsson;C. Nociforo;A. Perea;M. Petri;S. Pietri;R. Plag;R. Reifarth;G. Ribeiro;C. Rigollet;D. Rossi;M. Röder;D. Savran;H. Scheit;H. Simon;O. Sorlin;I. Syndikus;J. Taylor;O. Tengblad;R. Thies;Y. Togano;M. Vandebrouck;P. Velho;V. Volkov;A. Wagner;F. Wamers;H. Weick;C. Wheldon;G. Wilson;J. Winfield;P. Woods;D. Yakorev;M. Zhukov;A. Zilges;K. Zuber
通讯作者：
L. Atar;S. Paschalis;C. Barbieri;C. Bertulani;P. D. Fernandez;M. Holl;M. Najafi;V. Panin;H. Alvarez-Pol;T. Aumann;V. Avdeichikov;S. Beceiro-Novo;D. Bemmerer;J. Benlliure;J. M. Boillos;K. Boretzky;M. Borge;M. Caamano;C. Caesar;E. Casarejos;W. Catford;J. Cederkäll;M. Chartier;L. Chulkov;D. Cortina-Gil;E. Cravo;R. Crespo;I. Dillmann;Z. Elekes;J. Enders;O. Ershova;A. Estrade;F. Farinon;L. Fraile;M. Freer;D. G. Redondo;H. Geissel;R. Gernhäuser;P. Golubev;K. Göbel;J. Hagdahl;T. Heftrich;M. Heil;M. Heine;A. Heinz;A. Henriques;A. Hufnagel;A. Ignatov;H. Johansson;B. Jonson;J. Kahlbow;N. Kalantar-Nayestanaki;R. Kanungo;A. Kelić-Heil;A. Knyazev;T. Kröll;N. Kurz;M. Labiche;C. Langer;T. Bleis;R. Lemmon;S. Lindberg;J. Machado;J. Marganiec-Gałązka;A. Movsesyan;E. Nácher;E. Nikolskii;T. Nilsson;C. Nociforo;A. Perea;M. Petri;S. Pietri;R. Plag;R. Reifarth;G. Ribeiro;C. Rigollet;D. Rossi;M. Röder;D. Savran;H. Scheit;H. Simon;O. Sorlin;I. Syndikus;J. Taylor;O. Tengblad;R. Thies;Y. Togano;M. Vandebrouck;P. Velho;V. Volkov;A. Wagner;F. Wamers;H. Weick;C. Wheldon;G. Wilson;J. Winfield;P. Woods;D. Yakorev;M. Zhukov;A. Zilges;K. Zuber
DOI：
--
发表时间：
2016
期刊：
影响因子：
--
作者：
W. H. Dickhoff;R. Charity;M. Mahzoon
通讯作者：
M. Mahzoon
仅使用非局域色散光学模型成分对 Ca40(e,e′p)K39 数据进行畸变波脉冲近似描述的有效性
影响因子：
3.1
作者：
M. Atkinson;H. Blok;L. Lapik'as;R. Charity;W. H. Dickhoff
通讯作者：
W. H. Dickhoff
从色散光学模型分析中提取的球形核中核子相关性的不对称依赖性
DOI：
--
发表时间：
2011
期刊：
影响因子：
--
作者：
Jonathan Mueller;R. Charity;R. Shane;L. Sobotka;S. Waldecker;W. H. Dickhoff;A. Crowell;J. Esterline;B. Fallin;C. Howell;C. Westerfeldt;M. Youngs;B. Crowe;R. Pedroni
通讯作者：
R. Pedroni
700 MeV 下 40、44、48 Ca 的质子总反应截面测量
DOI：
--
发表时间：
1979
期刊：
影响因子：
--
作者：
B. Anderson;P. R. Bevington;F. Cverna;M. Mcnaughton;H. B. Willard;R. J. Barrett;N. King;D. Ernst
通讯作者：
D. Ernst