Spectroscopic strength reduction of intermediate-energy single-proton removal from oxygen isotopes

Sun, Y.; Wang, S. T.; Xu, Y. P.; Pang, D. Y.; Li, J. G.; Yuan, Cenxi; Wan, Lei; Qiao, Yu; Wang, Y. Q.; Chen, X. Y.

doi:10.1103/physrevc.106.034614

Cited by 6 publications

(2 citation statements)

References 39 publications

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“…Such quench-ing of single particle strengths has been attributed to some profound questions in nuclear physics, such as short-and medium-range nucleon-nucleon correlations and long-range correlations from the single-particle motion coupling of the nucleons near the Fermi surface and the collective excitations. Additionally, the reduction factors obtained from the transfer [10,13,38,39,[45][46][47][48], single-nucleon removal [35,36,40,[49][50][51][52][53], and quasifree knockout [54][55][56][57][58][59][60] ) reactions, which are free from the uncertainties of OMPs and are thus deemed to be more reliable, are known to range approximately between 0.4 and 0.7 [47,61]. Therefore, SFs derived from a self-consistent analysis are expectedly quenched by a common factor of approximately , independent of whether the reaction is nucleon adding or removing and whether a neutron or proton is transferred; in addition, the quenching is independent of the mass of the nucleus, reaction type, and angular momentum transfer [47,61].…”

Section: Resultsmentioning

confidence: 99%

“…A better solution is to confine the and values with reliable nuclear structure theory. The TB-MRM constrains the and values using modern Hartree-Fock (HF) calculations [13,[35][36][37][38][39][40], fixing the diffuseness parameter at fm. The radius parameter is determined by requiring that the root mean square (RMS) radius of the single neutron wave function, , is related to the RMS radius of the corresponding single particle orbital from the HF calculations, , by…”

Section: Model Calculationsmentioning

confidence: 99%

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Systematic investigation of nucleon optical model potentials in (p, d) transfer reactions*

Chen 陈,

Liu 刘,

Zhang 张

et al. 2024

Chinese Phys. C

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The consistent three-body model reaction methodology(TBMRM) proposed by J. Lee et al.[1–3], which includes adopting the simple zero-range adiabatic wave approximation, constraining the single-particle potentials using modern Hartree–Fock calculations, and using global nucleon optical model potential(OMP) geometries, are widely applied in systematic studies of transfer reactions. In this work, we study the influences of different nucleon OMPs on extraction of spectroscopic factors(SFs) from (p, d) reactions. Our study covers 32 sets of angular distribution data of (p, d) reactions on 4 targets, as well as a large range of incident energies(20-200 MeV/nucleon). Two semi-microscopic nucleon OMPs, JLM[4, 5] and CTOM[6], and a pure microscopic nucleon potential WLH[7] are used in the present work. The results are compared with those using the phenomenological global optical potential KD02[8]. We find the incident energy dependence of spectroscopic factors extracted from (p, d) reactions is obviously suppressed when microscopic OMPs are employed for 12C, 28Si and 40Ca. In addition, spectroscopic factors extracted using the systematic microscopic optical potential CTOM based on the Dirac-Brueckner-Hartree-Fock theory are more in line with the results obtained from (e, e'p) measurements, except 16O and 40Ca at high energies(> 100 MeV), calling for an exact treatment of double-magic nuclei. The results obtained by using pure microscopic optical potential WLH based on EFT theory shows the same trend but generally higher than CTOM. JLM potential, which relies on simplified nuclear matter calculations with old-fashioned bare interactions, produces very similar results with phenomenological potential KD02. Our results indicate that modern microscopic OMPs are reliable tools for probing the nuclear structure by transfer reactions across a wide energy range.

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Section: Resultsmentioning

confidence: 99%

Section: Model Calculationsmentioning

confidence: 99%

Systematic investigation of nucleon optical model potentials in (p, d) transfer reactions*

Chen 陈,

Liu 刘,

Zhang 张

et al. 2024

Chinese Phys. C

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Application of a microscopic optical potential of chiral effective field theory in (p, d) transfer reactions

Xu,

Chen,

Pang

2024

NUCL SCI TECH

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New insight into knockout reactions from the two-proton halo nucleus Ne17

Wamers,

Lehr,

Marganiec-Gałązka

et al. 2024

Phys. Rev. C

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The unexplained disagreement in the dependence of spectroscopic factors (C2Sexp) on the binding energy obtained by nucleon knockout using different targets is still a puzzle that needs to be addressed. To find an explanation of this riddle through exclusive measurements using different targets. The exclusive measurements were performed by using a Ne17 beam with an energy of 500 MeV/u incident on C and CH2 targets. Through the standard theoretical approach, C2Sexp were derived from the analysis of the experimental data on proton ejection from the proton halo in Ne17 as well as from its core O15. For the C target, proton ejection from the proton halo gave C2Sexp about 37% smaller than for the H target. But when protons are ejected from the core of Ne17, C2Sexp are identical within statistical uncertainties. An explanation for the difference in C2Sexp could be the removal of both halo protons, a more important reaction pathway for the C target. The C2Sexp values obtained by analyzing the proton ejection from the core indicate that it is not affected by the interaction with the halo protons.Published by the American Physical Society2024

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Spectroscopic strength reduction of intermediate-energy single-proton removal from oxygen isotopes

Cited by 6 publications

References 39 publications

Systematic investigation of nucleon optical model potentials in (p, d) transfer reactions*

Systematic investigation of nucleon optical model potentials in (p, d) transfer reactions*

Application of a microscopic optical potential of chiral effective field theory in (p, d) transfer reactions

New insight into knockout reactions from the two-proton halo nucleus Ne17

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