Diverse mechanisms in proton knockout reactions from the Borromean nucleus 17Ne

Abstract

Nucleon knockout experiments using beryllium or carbon targets reveal a strong dependence of the quenching factors, i.e., the ratio (R s) of theoretical to the experimental spectroscopic factors (C 2S), on the proton-neutron asymmetry in the nucleus under study. However, this dependence is greatly reduced when a hydrogen target is used. To understand this phenomenon, exclusive 1H (17Ne , 2p16F) and inclusive 12C(17Ne,2p16F)X , 12C (17Ne , 16F) X as well as 1H (17Ne , 16F) X (X-denotes undetected reaction products) reactions with 16F in the ground and excited states were analysed. The longitudinal momentum distribution of 16F and the correlations between the detached protons were studied. In the case of the carbon target, there is a significant deviation from the predictions of the eikonal model. The eikonal approximation was used to extract spectroscopic factor values C 2S . The experimental C 2S value obtained with C target is markedly lower than that for H target. This is interpreted as rescattering due to simultaneous nucleon knockout from both reaction partners, 17Ne and 12C .

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Item Type:	Article
Authors/Creators:	Wamers, F. Lehr, C. Marganiec-Gałązka, J. Aksouh, F. Aksyutina, Yu Alvarez-Pol, H. Atar, L. Aumann, T. Beceiro-Novo, S. Bertulani, C. A. Boretzky, K. Borge, M. J.G. Caesar, C. Chartier, M. Chatillon, A. Chulkov, L. V. Cortina-Gil, D. Fernández, P. Díaz Emling, H. Ershova, O. Fraile, L. M. Fynbo, H. O.U. Galaviz, D. Geissel, H. Heil, M. Holl, M. Johansson, H. T. Jonson, B. Karagiannis, C. Kiselev, O. A. Kulessa, R. Kurz, N. Langer, C. Lantz, M. Le Bleis, T. Lemmon, R. Litvinov, Yu A. Mahata, K. Müntz, C. Nilsson, T. Nociforo, C. Ott, W. Panin, V. Paschalis, S. https://orcid.org/0000-0002-9113-3778 Perea, A. Plag, R. Reifarth, R. Richter, A. Riisager, K. Rodriguez-Tajes, C. Rossi, D. Savran, D. Scheit, H. Schrieder, G. Schrock, P. Simon, H. Stroth, J. Sümmerer, K. Tengblad, O. Weick, H. Wimmer, C.
Copyright, Publisher and Additional Information:	Funding Information: This work is supported by the German Federal Ministry for Education and Research (BMBF) under contract No.05P15RDFN1, the ExtreMe Matter Institute (EMMI), HIC for FAIR, and the GSI-TU Darmstadt cooperation agreement. Financial support from the Swe- dish Research Council, from the Spanish grants from MICINN AEI FPA2017 - 87568 - P, PGC2018 - 0099746 - B - C21, FPA2015-64969-P, PID2019-104390GB-100, RTI2018-098868-B-100, and Maria de Maeztu Units of excellence MDM-2016-0692 are also acknowledged. One of us (B.J.) is a Helmholtz International Fellow. C.A.B. acknowledges support from the U.S. DOE grant DE-FG02-08ER41533. Publisher Copyright: © 2023, The Author(s).
Dates:	Published: 12 July 2023 Accepted: 22 June 2023
Institution:	The University of York
Academic Units:	The University of York > Faculty of Sciences (York) > Physics (York)
Depositing User:	Pure (York)
Date Deposited:	08 Sep 2023 08:00
Last Modified:	21 Dec 2024 00:24
Published Version:	https://doi.org/10.1140/epja/s10050-023-01063-y
Status:	Published
Refereed:	Yes
Identification Number:	10.1140/epja/s10050-023-01063-y
Related URLs:	http://www.scopus.com/inward/record.url?...
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:203191

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Description: Diverse mechanisms in proton knockout reactions from the Borromean nucleus 17

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Diverse mechanisms in proton knockout reactions from the Borromean nucleus 17Ne

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