Cross-shell states in 15C: A test for p-sd interactions

J. Lois-Fuentes; B. Fernández-Domínguez; X. Pereira-López; F. Delaunay; W.N. Catford; A. Matta; N.A. Orr; T. Duguet; T. Otsuka; V. Somà; O. Sorlin; T. Suzuki; N.L. Achouri; M. Assié; S. Bailey; B. Bastin; Y. Blumenfeld; R. Borcea; M. Caamaño; L. Caceres; E. Clément; A. Corsi; N. Curtis; Q. Deshayes; F. Farget; M. Fisichella; G. De france; S. Franchoo; M. Freer; J. Gibelin; A. Gillibert; G.F. Grinyer; F. Hammache; O. Kamalou; A. Knapton; Tz. Kokalova; V. Lapoux; B. Le Crom; S. Leblond; F.M. Marqués; P. Morfouace; J. Pancin; L. Perrot; J. Piot; E. Pollacco; D. Ramos; D. Regueira-Castro; C. Rodríguez-Tajes; T. Roger; F. Rotaru; M. Sénoville; N. De Séréville; R. Smith; M. Stanoiu; I. Stefan; C. Stodel; D. Suzuki; J.C. Thomas; N. Timofeyuk; M. Vandebrouck; J. Walshe; C. Wheldon

doi:10.1016/j.physletb.2023.138149

Cross-shell states in ¹⁵C: A test for p-sd interactions

J. Lois-Fuentes, B. Fernández-Domínguez^*, X. Pereira-López, F. Delaunay, W.N. Catford, A. Matta, N.A. Orr, T. Duguet, T. Otsuka, V. Somà, O. Sorlin, T. Suzuki, N.L. Achouri, M. Assié, S. Bailey, B. Bastin, Y. Blumenfeld, R. Borcea, M. Caamaño, L. CaceresE. Clément, A. Corsi, N. Curtis, Q. Deshayes, F. Farget, M. Fisichella, G. De france, S. Franchoo, M. Freer, J. Gibelin, A. Gillibert, G.F. Grinyer, F. Hammache, O. Kamalou, A. Knapton, Tz. Kokalova, V. Lapoux, B. Le Crom, S. Leblond, F.M. Marqués, P. Morfouace, J. Pancin, L. Perrot, J. Piot, E. Pollacco, D. Ramos, D. Regueira-Castro, C. Rodríguez-Tajes, T. Roger, F. Rotaru, M. Sénoville, N. De Séréville, R. Smith, M. Stanoiu, I. Stefan, C. Stodel, D. Suzuki, J.C. Thomas, N. Timofeyuk, M. Vandebrouck, J. Walshe, C. Wheldon

^*Corresponding author for this work

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Abstract

The low-lying structure of ¹⁵C has been investigated via the neutron-removal ¹⁶C(d,t) reaction. Along with the known bound neutron sd-shell states, unbound p-shell hole states have been observed. The excitation energies and the deduced spectroscopic factors of the cross-shell states are an important measure of the [(p)⁻¹(sd)²] neutron configurations in ¹⁵C. Our results show a very good agreement with shell-model calculations using the SFO-tls interaction for ¹⁵C. However, this same interaction predicted energies that were too low for the corresponding hole states in the N = 9 isotone ¹⁷O and adjustment of the p-sd and sd-sd monopole terms was required to match the ¹⁷O energies. In addition, the excitation energies and spectroscopic factors have been compared to the first calculations of ¹⁵C with the ab initio self-consistent Green’s function method employing the NNLO_sat interaction. The results show the sensitivity to the size of the N = 8 shell gap and highlight the need to go beyond the current truncation scheme

Original language	English
Article number	138149
Pages (from-to)	138149
Number of pages	7
Journal	Physics Letters B
Volume	845
Early online date	28 Aug 2023
DOIs	https://doi.org/10.1016/j.physletb.2023.138149
Publication status	Published - 10 Oct 2023

Bibliographical note

Acknowledgments:
J.L.F. wishes to acknowledge financial support from Xunta de Galicia (Spain) grant number ED481A-2020/069, X.P.L. acknowledges support through an IN2P3/CNRS (France) doctoral fellowship, the ST/P003885 grant (Spain) and Grant No. IBS-R031-D1. This work was supported by the Spanish MINECO through the project PGC2018-096717-B-C22 and PID2021-128487NB-I00. This work was also partially supported by the Xunta de Galicia under project No ED431B 2018/015, 2021-PG045 and the Maria de Maeztu Unit of Excellence MDM-2016-0692. W.N.C., N.T. and A.M. acknowledge financial support from the STFC grant number ST/L005743/1. M.F., N.C., Tz.K. and C.W. acknowledge support from STFC grant number ST/V001043/1. The authors acknowledge the support provided by the technical staff of LPC-Caen and GANIL. SCGF calculations were performed by using HPC resources from GENCI-TGCC (Contract no. A0110513012). The participants from the Universities of Birmingham and Surrey, as well as the INFN and IFIN-HH laboratories also acknowledge partial support from the European Community within the FP6 contract EURONS RII3-CT-2004-06065.

Keywords

One neutron pick-up reaction
Neutron-rich carbon isotopes
Phenomenological shell-model
Ab initio calculations

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LoisFuentesJ2023CrossFinal published version, 967 KBLicence: Creative Commons: Attribution (CC BY)

Birmingham Nuclear Physics Consolidated Grant 2021
Jones, P., Evans, P., Wheldon, C. & Kokalova Wheldon, T.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL, Match Equipment - STFC
1/10/21 → 30/09/24
Project: Research

Cite this

Lois-Fuentes, J., Fernández-Domínguez, B., Pereira-López, X., Delaunay, F., Catford, W. N., Matta, A., Orr, N. A., Duguet, T., Otsuka, T., Somà, V., Sorlin, O., Suzuki, T., Achouri, N. L., Assié, M., Bailey, S., Bastin, B., Blumenfeld, Y., Borcea, R., Caamaño, M., ... Wheldon, C. (2023). Cross-shell states in ¹⁵C: A test for p-sd interactions. Physics Letters B, 845, 138149. Article 138149. https://doi.org/10.1016/j.physletb.2023.138149

@article{d00b041d4583428eaf6115d155e54243,

title = "Cross-shell states in 15C: A test for p-sd interactions",

abstract = "The low-lying structure of 15C has been investigated via the neutron-removal 16C(d,t) reaction. Along with the known bound neutron sd-shell states, unbound p-shell hole states have been observed. The excitation energies and the deduced spectroscopic factors of the cross-shell states are an important measure of the [(p)−1(sd)2] neutron configurations in 15C. Our results show a very good agreement with shell-model calculations using the SFO-tls interaction for 15C. However, this same interaction predicted energies that were too low for the corresponding hole states in the N = 9 isotone 17O and adjustment of the p-sd and sd-sd monopole terms was required to match the 17O energies. In addition, the excitation energies and spectroscopic factors have been compared to the first calculations of 15C with the ab initio self-consistent Green{\textquoteright}s function method employing the NNLOsat interaction. The results show the sensitivity to the size of the N = 8 shell gap and highlight the need to go beyond the current truncation scheme",

keywords = "One neutron pick-up reaction, Neutron-rich carbon isotopes, Phenomenological shell-model, Ab initio calculations",

author = "J. Lois-Fuentes and B. Fern{\'a}ndez-Dom{\'i}nguez and X. Pereira-L{\'o}pez and F. Delaunay and W.N. Catford and A. Matta and N.A. Orr and T. Duguet and T. Otsuka and V. Som{\`a} and O. Sorlin and T. Suzuki and N.L. Achouri and M. Assi{\'e} and S. Bailey and B. Bastin and Y. Blumenfeld and R. Borcea and M. Caama{\~n}o and L. Caceres and E. Cl{\'e}ment and A. Corsi and N. Curtis and Q. Deshayes and F. Farget and M. Fisichella and {De france}, G. and S. Franchoo and M. Freer and J. Gibelin and A. Gillibert and G.F. Grinyer and F. Hammache and O. Kamalou and A. Knapton and Tz. Kokalova and V. Lapoux and {Le Crom}, B. and S. Leblond and F.M. Marqu{\'e}s and P. Morfouace and J. Pancin and L. Perrot and J. Piot and E. Pollacco and D. Ramos and D. Regueira-Castro and C. Rodr{\'i}guez-Tajes and T. Roger and F. Rotaru and M. S{\'e}noville and {De S{\'e}r{\'e}ville}, N. and R. Smith and M. Stanoiu and I. Stefan and C. Stodel and D. Suzuki and J.C. Thomas and N. Timofeyuk and M. Vandebrouck and J. Walshe and C. Wheldon",

note = "Acknowledgments: J.L.F. wishes to acknowledge financial support from Xunta de Galicia (Spain) grant number ED481A-2020/069, X.P.L. acknowledges support through an IN2P3/CNRS (France) doctoral fellowship, the ST/P003885 grant (Spain) and Grant No. IBS-R031-D1. This work was supported by the Spanish MINECO through the project PGC2018-096717-B-C22 and PID2021-128487NB-I00. This work was also partially supported by the Xunta de Galicia under project No ED431B 2018/015, 2021-PG045 and the Maria de Maeztu Unit of Excellence MDM-2016-0692. W.N.C., N.T. and A.M. acknowledge financial support from the STFC grant number ST/L005743/1. M.F., N.C., Tz.K. and C.W. acknowledge support from STFC grant number ST/V001043/1. The authors acknowledge the support provided by the technical staff of LPC-Caen and GANIL. SCGF calculations were performed by using HPC resources from GENCI-TGCC (Contract no. A0110513012). The participants from the Universities of Birmingham and Surrey, as well as the INFN and IFIN-HH laboratories also acknowledge partial support from the European Community within the FP6 contract EURONS RII3-CT-2004-06065. ",

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month = oct,

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doi = "10.1016/j.physletb.2023.138149",

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Lois-Fuentes, J, Fernández-Domínguez, B, Pereira-López, X, Delaunay, F, Catford, WN, Matta, A, Orr, NA, Duguet, T, Otsuka, T, Somà, V, Sorlin, O, Suzuki, T, Achouri, NL, Assié, M, Bailey, S, Bastin, B, Blumenfeld, Y, Borcea, R, Caamaño, M, Caceres, L, Clément, E, Corsi, A, Curtis, N, Deshayes, Q, Farget, F, Fisichella, M, De france, G, Franchoo, S, Freer, M, Gibelin, J, Gillibert, A, Grinyer, GF, Hammache, F, Kamalou, O, Knapton, A, Kokalova, T, Lapoux, V, Le Crom, B, Leblond, S, Marqués, FM, Morfouace, P, Pancin, J, Perrot, L, Piot, J, Pollacco, E, Ramos, D, Regueira-Castro, D, Rodríguez-Tajes, C, Roger, T, Rotaru, F, Sénoville, M, De Séréville, N, Smith, R, Stanoiu, M, Stefan, I, Stodel, C, Suzuki, D, Thomas, JC, Timofeyuk, N, Vandebrouck, M, Walshe, J & Wheldon, C 2023, 'Cross-shell states in ¹⁵C: A test for p-sd interactions', Physics Letters B, vol. 845, 138149, pp. 138149. https://doi.org/10.1016/j.physletb.2023.138149

TY - JOUR

T1 - Cross-shell states in 15C

T2 - A test for p-sd interactions

AU - Lois-Fuentes, J.

AU - Fernández-Domínguez, B.

AU - Pereira-López, X.

AU - Delaunay, F.

AU - Catford, W.N.

AU - Matta, A.

AU - Orr, N.A.

AU - Duguet, T.

AU - Otsuka, T.

AU - Somà, V.

AU - Sorlin, O.

AU - Suzuki, T.

AU - Achouri, N.L.

AU - Assié, M.

AU - Bailey, S.

AU - Bastin, B.

AU - Blumenfeld, Y.

AU - Borcea, R.

AU - Caamaño, M.

AU - Caceres, L.

AU - Clément, E.

AU - Corsi, A.

AU - Curtis, N.

AU - Deshayes, Q.

AU - Farget, F.

AU - Fisichella, M.

AU - De france, G.

AU - Franchoo, S.

AU - Freer, M.

AU - Gibelin, J.

AU - Gillibert, A.

AU - Grinyer, G.F.

AU - Hammache, F.

AU - Kamalou, O.

AU - Knapton, A.

AU - Kokalova, Tz.

AU - Lapoux, V.

AU - Le Crom, B.

AU - Leblond, S.

AU - Marqués, F.M.

AU - Morfouace, P.

AU - Pancin, J.

AU - Perrot, L.

AU - Piot, J.

AU - Pollacco, E.

AU - Ramos, D.

AU - Regueira-Castro, D.

AU - Rodríguez-Tajes, C.

AU - Roger, T.

AU - Rotaru, F.

AU - Sénoville, M.

AU - De Séréville, N.

AU - Smith, R.

AU - Stanoiu, M.

AU - Stefan, I.

AU - Stodel, C.

AU - Suzuki, D.

AU - Thomas, J.C.

AU - Timofeyuk, N.

AU - Vandebrouck, M.

AU - Walshe, J.

AU - Wheldon, C.

N1 - Acknowledgments: J.L.F. wishes to acknowledge financial support from Xunta de Galicia (Spain) grant number ED481A-2020/069, X.P.L. acknowledges support through an IN2P3/CNRS (France) doctoral fellowship, the ST/P003885 grant (Spain) and Grant No. IBS-R031-D1. This work was supported by the Spanish MINECO through the project PGC2018-096717-B-C22 and PID2021-128487NB-I00. This work was also partially supported by the Xunta de Galicia under project No ED431B 2018/015, 2021-PG045 and the Maria de Maeztu Unit of Excellence MDM-2016-0692. W.N.C., N.T. and A.M. acknowledge financial support from the STFC grant number ST/L005743/1. M.F., N.C., Tz.K. and C.W. acknowledge support from STFC grant number ST/V001043/1. The authors acknowledge the support provided by the technical staff of LPC-Caen and GANIL. SCGF calculations were performed by using HPC resources from GENCI-TGCC (Contract no. A0110513012). The participants from the Universities of Birmingham and Surrey, as well as the INFN and IFIN-HH laboratories also acknowledge partial support from the European Community within the FP6 contract EURONS RII3-CT-2004-06065.

PY - 2023/10/10

Y1 - 2023/10/10

N2 - The low-lying structure of 15C has been investigated via the neutron-removal 16C(d,t) reaction. Along with the known bound neutron sd-shell states, unbound p-shell hole states have been observed. The excitation energies and the deduced spectroscopic factors of the cross-shell states are an important measure of the [(p)−1(sd)2] neutron configurations in 15C. Our results show a very good agreement with shell-model calculations using the SFO-tls interaction for 15C. However, this same interaction predicted energies that were too low for the corresponding hole states in the N = 9 isotone 17O and adjustment of the p-sd and sd-sd monopole terms was required to match the 17O energies. In addition, the excitation energies and spectroscopic factors have been compared to the first calculations of 15C with the ab initio self-consistent Green’s function method employing the NNLOsat interaction. The results show the sensitivity to the size of the N = 8 shell gap and highlight the need to go beyond the current truncation scheme

AB - The low-lying structure of 15C has been investigated via the neutron-removal 16C(d,t) reaction. Along with the known bound neutron sd-shell states, unbound p-shell hole states have been observed. The excitation energies and the deduced spectroscopic factors of the cross-shell states are an important measure of the [(p)−1(sd)2] neutron configurations in 15C. Our results show a very good agreement with shell-model calculations using the SFO-tls interaction for 15C. However, this same interaction predicted energies that were too low for the corresponding hole states in the N = 9 isotone 17O and adjustment of the p-sd and sd-sd monopole terms was required to match the 17O energies. In addition, the excitation energies and spectroscopic factors have been compared to the first calculations of 15C with the ab initio self-consistent Green’s function method employing the NNLOsat interaction. The results show the sensitivity to the size of the N = 8 shell gap and highlight the need to go beyond the current truncation scheme

KW - One neutron pick-up reaction

KW - Neutron-rich carbon isotopes

KW - Phenomenological shell-model

KW - Ab initio calculations

U2 - 10.1016/j.physletb.2023.138149

DO - 10.1016/j.physletb.2023.138149

M3 - Article

SN - 0370-2693

VL - 845

SP - 138149

JO - Physics Letters B

JF - Physics Letters B

M1 - 138149

ER -