New insight into knockout reactions from the two-proton halo nucleus Ne 17

F. Wamers; C. Lehr; J. Marganiec-Gałązka; F. Aksouh; Yu Aksyutina; H. Álvarez-Pol; L. Atar; T. Aumann; S. Beceiro-Novo; C. A. Bertulani; K. Boretzky; M. J.G. Borge; C. Caesar; M. Chartier; A. Chatillon; L. V. Chulkov; D. Cortina-Gil; P. Díaz Fernández; H. Emling; O. Ershova; L. M. Fraile; H. O.U. Fynbo; D. Galaviz; H. Geissel; M. Heil; M. Holl; H. T. Johansson; B. Jonson; C. Karagiannis; O. A. Kiselev; R. Kulessa; N. Kurz; C. Langer; M. Lantz; T. Le Bleis; R. Lemmon; Yu A. Litvinov; K. Mahata; C. Müntz; T. Nilsson; C. Nociforo; V. Panin; S. Paschalis; A. Perea; R. Plag; R. Reifarth; A. Richter; K. Riisager; C. Rodriguez-Tajes; D. Rossi; D. Savran; H. Scheit; G. Schrieder; H. Simon; J. Stroth; K. Sümmerer; O. Tengblad; S. Typel; H. Weick

doi:10.1103/PhysRevC.109.054602

New insight into knockout reactions from the two-proton halo nucleus Ne 17

F. Wamers, C. Lehr, J. Marganiec-Gałązka, F. Aksouh, Yu Aksyutina, H. Álvarez-Pol, L. Atar, T. Aumann, S. Beceiro-Novo, C. A. Bertulani, K. Boretzky, M. J.G. Borge, C. Caesar, M. Chartier, A. Chatillon, L. V. Chulkov, D. Cortina-Gil, P. Díaz Fernández, H. Emling, O. ErshovaL. M. Fraile, H. O.U. Fynbo, D. Galaviz, H. Geissel, M. Heil, M. Holl, H. T. Johansson, B. Jonson, C. Karagiannis, O. A. Kiselev, R. Kulessa, N. Kurz, C. Langer, M. Lantz, T. Le Bleis, R. Lemmon, Yu A. Litvinov, K. Mahata, C. Müntz, T. Nilsson, C. Nociforo, V. Panin, S. Paschalis, A. Perea, R. Plag, R. Reifarth, A. Richter, K. Riisager, C. Rodriguez-Tajes, D. Rossi, D. Savran, H. Scheit, G. Schrieder, H. Simon, J. Stroth, K. Sümmerer, O. Tengblad, S. Typel, H. Weick

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Background: 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. Purpose: To find an explanation of this riddle through exclusive measurements using different targets. Method: 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. Result: 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. Conclusion: 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.

Original language	English
Article number	054602
Number of pages	8
Journal	Physical Review C
Volume	109
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.109.054602
Publication status	Published - 3 May 2024

Bibliographical note

Funding Information:
This work is supported by the German Federal Ministry for Education and Research (BMBF) under Contract No. 05P15RDFN1, and the GSI-TU Darmstadt cooperation agreement. This work was partly supported by the Spanish Funding Agency MCIN/AEI/10.13039/501100011033 and FEDER under Grants No. RTI2018-098868-B-I00, No. PID2019-104390GB-I00, No. PID2021-126998OB-I00, and No. PDI2022-140162-I00. C.A.B. acknowledges support by U.S. DOE Grant No. DE-FG02-08ER41533 and the Helmholtz Research Academy Hesse for FAIR.

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© 2024 authors. Published by the American Physical Society.

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New insight into knockout reactions from the two-proton halo nucleus 17Ne
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Wamers, F., Lehr, C., Marganiec-Gałązka, J., Aksouh, F., Aksyutina, Y., Álvarez-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., Díaz Fernández, P., Emling, H., ... Weick, H. (2024). New insight into knockout reactions from the two-proton halo nucleus Ne 17. Physical Review C, 109(5), Article 054602. https://doi.org/10.1103/PhysRevC.109.054602

@article{29d20024b4a54d17a108692dd272eba1,

title = "New insight into knockout reactions from the two-proton halo nucleus Ne 17",

abstract = "Background: 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. Purpose: To find an explanation of this riddle through exclusive measurements using different targets. Method: 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. Result: 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. Conclusion: 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.",

author = "F. Wamers and C. Lehr and J. Marganiec-Ga{\l}{\c a}zka and F. Aksouh and Yu Aksyutina and H. {\'A}lvarez-Pol and L. Atar and T. Aumann and S. Beceiro-Novo and Bertulani, {C. A.} and K. Boretzky and Borge, {M. J.G.} and C. Caesar and M. Chartier and A. Chatillon and Chulkov, {L. V.} and D. Cortina-Gil and {D{\'i}az Fern{\'a}ndez}, P. and H. Emling and O. Ershova and Fraile, {L. M.} and Fynbo, {H. O.U.} and D. Galaviz and H. Geissel and M. Heil and M. Holl and Johansson, {H. T.} and B. Jonson and C. Karagiannis and Kiselev, {O. A.} and R. Kulessa and N. Kurz and C. Langer and M. Lantz and {Le Bleis}, T. and R. Lemmon and Litvinov, {Yu A.} and K. Mahata and C. M{\"u}ntz and T. Nilsson and C. Nociforo and V. Panin and S. Paschalis and A. Perea and R. Plag and R. Reifarth and A. Richter and K. Riisager and C. Rodriguez-Tajes and D. Rossi and D. Savran and H. Scheit and G. Schrieder and H. Simon and J. Stroth and K. S{\"u}mmerer and O. Tengblad and S. Typel and H. Weick",

note = "Funding Information: This work is supported by the German Federal Ministry for Education and Research (BMBF) under Contract No. 05P15RDFN1, and the GSI-TU Darmstadt cooperation agreement. This work was partly supported by the Spanish Funding Agency MCIN/AEI/10.13039/501100011033 and FEDER under Grants No. RTI2018-098868-B-I00, No. PID2019-104390GB-I00, No. PID2021-126998OB-I00, and No. PDI2022-140162-I00. C.A.B. acknowledges support by U.S. DOE Grant No. DE-FG02-08ER41533 and the Helmholtz Research Academy Hesse for FAIR. Publisher Copyright: {\textcopyright} 2024 authors. Published by the American Physical Society.",

year = "2024",

month = may,

day = "3",

doi = "10.1103/PhysRevC.109.054602",

language = "English",

volume = "109",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "5",

}

Wamers, F, Lehr, C, Marganiec-Gałązka, J, Aksouh, F, Aksyutina, Y, Álvarez-Pol, H, Atar, L, Aumann, T, Beceiro-Novo, S, Bertulani, CA, Boretzky, K, Borge, MJG, Caesar, C, Chartier, M, Chatillon, A, Chulkov, LV, Cortina-Gil, D, Díaz Fernández, P, Emling, H, Ershova, O, Fraile, LM, Fynbo, HOU, Galaviz, D, Geissel, H, Heil, M, Holl, M, Johansson, HT, Jonson, B, Karagiannis, C, Kiselev, OA, Kulessa, R, Kurz, N, Langer, C, Lantz, M, Le Bleis, T, Lemmon, R, Litvinov, YA, Mahata, K, Müntz, C, Nilsson, T, Nociforo, C, Panin, V, Paschalis, S, Perea, A, Plag, R, Reifarth, R, Richter, A, Riisager, K, Rodriguez-Tajes, C, Rossi, D, Savran, D, Scheit, H, Schrieder, G, Simon, H, Stroth, J, Sümmerer, K, Tengblad, O, Typel, S & Weick, H 2024, 'New insight into knockout reactions from the two-proton halo nucleus Ne 17', Physical Review C, vol. 109, no. 5, 054602. https://doi.org/10.1103/PhysRevC.109.054602

TY - JOUR

T1 - New insight into knockout reactions from the two-proton halo nucleus Ne 17

AU - Wamers, F.

AU - Lehr, C.

AU - Marganiec-Gałązka, J.

AU - Aksouh, F.

AU - Aksyutina, Yu

AU - Álvarez-Pol, H.

AU - Atar, L.

AU - Aumann, T.

AU - Beceiro-Novo, S.

AU - Bertulani, C. A.

AU - Boretzky, K.

AU - Borge, M. J.G.

AU - Caesar, C.

AU - Chartier, M.

AU - Chatillon, A.

AU - Chulkov, L. V.

AU - Cortina-Gil, D.

AU - Díaz Fernández, P.

AU - Emling, H.

AU - Ershova, O.

AU - Fraile, L. M.

AU - Fynbo, H. O.U.

AU - Galaviz, D.

AU - Geissel, H.

AU - Heil, M.

AU - Holl, M.

AU - Johansson, H. T.

AU - Jonson, B.

AU - Karagiannis, C.

AU - Kiselev, O. A.

AU - Kulessa, R.

AU - Kurz, N.

AU - Langer, C.

AU - Lantz, M.

AU - Le Bleis, T.

AU - Lemmon, R.

AU - Litvinov, Yu A.

AU - Mahata, K.

AU - Müntz, C.

AU - Nilsson, T.

AU - Nociforo, C.

AU - Panin, V.

AU - Paschalis, S.

AU - Perea, A.

AU - Plag, R.

AU - Reifarth, R.

AU - Richter, A.

AU - Riisager, K.

AU - Rodriguez-Tajes, C.

AU - Rossi, D.

AU - Savran, D.

AU - Scheit, H.

AU - Schrieder, G.

AU - Simon, H.

AU - Stroth, J.

AU - Sümmerer, K.

AU - Tengblad, O.

AU - Typel, S.

AU - Weick, H.

N1 - Funding Information: This work is supported by the German Federal Ministry for Education and Research (BMBF) under Contract No. 05P15RDFN1, and the GSI-TU Darmstadt cooperation agreement. This work was partly supported by the Spanish Funding Agency MCIN/AEI/10.13039/501100011033 and FEDER under Grants No. RTI2018-098868-B-I00, No. PID2019-104390GB-I00, No. PID2021-126998OB-I00, and No. PDI2022-140162-I00. C.A.B. acknowledges support by U.S. DOE Grant No. DE-FG02-08ER41533 and the Helmholtz Research Academy Hesse for FAIR. Publisher Copyright: © 2024 authors. Published by the American Physical Society.

PY - 2024/5/3

Y1 - 2024/5/3

N2 - Background: 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. Purpose: To find an explanation of this riddle through exclusive measurements using different targets. Method: 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. Result: 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. Conclusion: 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.

AB - Background: 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. Purpose: To find an explanation of this riddle through exclusive measurements using different targets. Method: 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. Result: 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. Conclusion: 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.

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U2 - 10.1103/PhysRevC.109.054602

DO - 10.1103/PhysRevC.109.054602

M3 - Article

AN - SCOPUS:85192297884

SN - 2469-9985

VL - 109

JO - Physical Review C

JF - Physical Review C

IS - 5

M1 - 054602

ER -

New insight into knockout reactions from the two-proton halo nucleus Ne 17

Abstract

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