Low-lying single-particle structure of 17C and the N = 14 sub-shell closure

Pereira-López, X.; Fernández-Domínguez, B.; Delaunay, F.; Achouri, N. L.; Orr, N. A.; Catford, W. N.; 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, G. F.; Hammache, F.; Kamalou, O.; Knapton, A.; Kokalova, T.; Lapoux, V.; Lay, J. A.; Le Crom, B.; Leblond, S.; Lois-Fuentes, J.; Marqués, F. M.; Matta, A.; Morfouace, P.; Moro, A. M.; Otsuka, T.; Pancin, J.; Perrot, L.; Piot, J.; Pollacco, E.; Ramos, D.; Rodríguez-Tajes, C.; Roger, T.; Rotaru, F.; Sénoville, M.; de Séréville, N.; Smith, R.; Sorlin, O.; Stanoiu, M.; Stefan, I.; Stodel, C.; Suzuki, D.; Suzuki, T.; Thomas, J. C.; Timofeyuk, N.; Vandebrouck, M.; Walshe, J.; Wheldon, C.

doi:10.1016/j.physletb.2020.135939

Title: Low-lying single-particle structure of 17C and the N = 14 sub-shell closure

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Abstract

The first investigation of the single-particle structure of the bound states of ¹⁷C, via the d(¹⁶C, p) transfer reaction, has been undertaken. The measured angular distributions confirm the spin-parity assignments of 1/2⁺ and 5/2⁺ for the excited states located at 217 and 335 keV, respectively. The spectroscopic factors deduced for these states exhibit a marked single-particle character, in agreement with shell model and particle-core model calculations, and combined with their near degeneracy in energy provide clear evidence for the absence of the N = 14 sub-shell closure. The very small spectroscopic factor found for the 3/2+ ground state is consistent with theoretical predictions and indicates that the ν1d_3/2 strength is carried by unbound states. With a dominant = 0 valence neutron configuration and a very low separation energy, the 1/2⁺ excited state is a one-neutron halo candidate.

Authors:

; Fernández-Domínguez, B.; Delaunay, F.; Achouri, N. L.; Orr, N. A.; Catford, W. N.; Assié, M.; Bailey, S.; Bastin, B.; Blumenfeld, Y.; Borcea, R.; Caamaño, M.;

; Clément, E.; Corsi, A.; Curtis, N.; Deshayes, Q.; Farget, F.; Fisichella, M.; de France, G. more »

Publication Date:: Tue Dec 01 00:00:00 EST 2020

Research Org.:: Rutgers Univ., Piscataway, NJ (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA); UKRI Science and Technology Facilities Council; Ministry of Economic Affairs and Digital Transformation of Spain (MINECO); Xunta de Galicia; STFC; Spanish Ministerio de Ciencia, Innovación y Universidade; European Union (EU)

OSTI Identifier:: 1734432

Alternate Identifier(s):: OSTI ID: 1850289

Grant/Contract Number:: NA0002132; ST/P003885; RYC-2010-06484; RYC-2012-11585; FPA2013-46236-P; 2011-AIC-D-2011-0802; PGC2018-096717-B-C22; EM2013/039; ST/L005743/1; 654002; EURONS RII3-CT-2004-06065

Resource Type:: Published Article

Journal Name:: Physics Letters B

Additional Journal Information:: Journal Name: Physics Letters B Journal Volume: 811 Journal Issue: C; Journal ID: ISSN 0370-2693

Publisher:: Elsevier

Country of Publication:: Netherlands

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Astronomy & Astrophysics; Physics

Citation Formats


                    Pereira-López, X., Fernández-Domínguez, B., Delaunay, F., Achouri, N. L., Orr, N. A., Catford, W. N., 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, G. F., Hammache, F., Kamalou, O., Knapton, A., Kokalova, T., Lapoux, V., Lay, J. A., Le Crom, B., Leblond, S., Lois-Fuentes, J., Marqués, F. M., Matta, A., Morfouace, P., Moro, A. M., Otsuka, T., Pancin, J., Perrot, L., Piot, J., Pollacco, E., Ramos, D., Rodríguez-Tajes, C., Roger, T., Rotaru, F., Sénoville, M., de Séréville, N., Smith, R., Sorlin, O., Stanoiu, M., Stefan, I., Stodel, C., Suzuki, D., Suzuki, T., Thomas, J. C., Timofeyuk, N., Vandebrouck, M., Walshe, J., and Wheldon, C. Low-lying single-particle structure of 17C and the N = 14 sub-shell closure.  Netherlands: N. p., 2020. 
Web.  doi:10.1016/j.physletb.2020.135939.

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                    Pereira-López, X., Fernández-Domínguez, B., Delaunay, F., Achouri, N. L., Orr, N. A., Catford, W. N., 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, G. F., Hammache, F., Kamalou, O., Knapton, A., Kokalova, T., Lapoux, V., Lay, J. A., Le Crom, B., Leblond, S., Lois-Fuentes, J., Marqués, F. M., Matta, A., Morfouace, P., Moro, A. M., Otsuka, T., Pancin, J., Perrot, L., Piot, J., Pollacco, E., Ramos, D., Rodríguez-Tajes, C., Roger, T., Rotaru, F., Sénoville, M., de Séréville, N., Smith, R., Sorlin, O., Stanoiu, M., Stefan, I., Stodel, C., Suzuki, D., Suzuki, T., Thomas, J. C., Timofeyuk, N., Vandebrouck, M., Walshe, J., & Wheldon, C. Low-lying single-particle structure of 17C and the N = 14 sub-shell closure.  Netherlands.  https://doi.org/10.1016/j.physletb.2020.135939

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                    Pereira-López, X., Fernández-Domínguez, B., Delaunay, F., Achouri, N. L., Orr, N. A., Catford, W. N., 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, G. F., Hammache, F., Kamalou, O., Knapton, A., Kokalova, T., Lapoux, V., Lay, J. A., Le Crom, B., Leblond, S., Lois-Fuentes, J., Marqués, F. M., Matta, A., Morfouace, P., Moro, A. M., Otsuka, T., Pancin, J., Perrot, L., Piot, J., Pollacco, E., Ramos, D., Rodríguez-Tajes, C., Roger, T., Rotaru, F., Sénoville, M., de Séréville, N., Smith, R., Sorlin, O., Stanoiu, M., Stefan, I., Stodel, C., Suzuki, D., Suzuki, T., Thomas, J. C., Timofeyuk, N., Vandebrouck, M., Walshe, J., and Wheldon, C. Tue .  
"Low-lying single-particle structure of 17C and the N = 14 sub-shell closure".  Netherlands.  https://doi.org/10.1016/j.physletb.2020.135939.

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@article{osti_1734432,

  title        = {Low-lying single-particle structure of 17C and the N = 14 sub-shell closure},

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

  abstractNote = {The first investigation of the single-particle structure of the bound states of 17C, via the d(16C, p) transfer reaction, has been undertaken. The measured angular distributions confirm the spin-parity assignments of 1/2+ and 5/2+ for the excited states located at 217 and 335 keV, respectively. The spectroscopic factors deduced for these states exhibit a marked single-particle character, in agreement with shell model and particle-core model calculations, and combined with their near degeneracy in energy provide clear evidence for the absence of the N = 14 sub-shell closure. The very small spectroscopic factor found for the 3/2+ ground state is consistent with theoretical predictions and indicates that the ν1d3/2 strength is carried by unbound states. With a dominant = 0 valence neutron configuration and a very low separation energy, the 1/2+ excited state is a one-neutron halo candidate.},

  doi          = {10.1016/j.physletb.2020.135939},

  journal      = {Physics Letters B},

  number       = C,

  volume       = 811,

  place        = {Netherlands},

  year         = {Tue Dec 01 00:00:00 EST 2020},

  month        = {Tue Dec 01 00:00:00 EST 2020}

}

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Title: Low-lying single-particle structure of 17C and the N = 14 sub-shell closure

Abstract

Citation Formats

Title: Low-lying single-particle structure of 17C and the N = 14 sub-shell closure