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Catford WN, Timis CN, Lemmon RC, et al. Migration of nuclear shell gaps studied in the d(24Ne,pγ)25Ne reaction. Phys Rev Lett. 2010;104(19):192501doi: 10.1103/PhysRevLett.104.192501.
Catford, W. N., Timis, C. N., Lemmon, R. C., Labiche, M., Orr, N. A., Fernández-Domínguez, B., Chapman, R., Freer, M., Chartier, M., Savajols, H., Rejmund, M., Achouri, N. L., Amzal, N., Ashwood, N. I., Baldwin, T. D., Burns, M., Caballero, L., Casadjian, J. M., Curtis, N., de France, G., Gelletly, W., Liang, X., Pain, S. D., Pucknell, V. P., Rubio, B., Sorlin, O., Spohr, K., Theisen, C. h., & Warner, D. D. (2010). Migration of nuclear shell gaps studied in the d(24Ne,pγ)25Ne reaction. Physical review letters, 104(19), 192501. https://doi.org/10.1103/PhysRevLett.104.192501
Catford, W N, et al. "Migration of nuclear shell gaps studied in the d(24Ne,pγ)25Ne reaction." Physical review letters vol. 104,19 (2010): 192501. doi: https://doi.org/10.1103/PhysRevLett.104.192501
Catford WN, Timis CN, Lemmon RC, Labiche M, Orr NA, Fernández-Domínguez B, Chapman R, Freer M, Chartier M, Savajols H, Rejmund M, Achouri NL, Amzal N, Ashwood NI, Baldwin TD, Burns M, Caballero L, Casadjian JM, Curtis N, de France G, Gelletly W, Liang X, Pain SD, Pucknell VP, Rubio B, Sorlin O, Spohr K, Theisen Ch, Warner DD. Migration of nuclear shell gaps studied in the d(24Ne,pγ)25Ne reaction. Phys Rev Lett. 2010 May 14;104(19):192501. doi: 10.1103/PhysRevLett.104.192501. Epub 2010 May 10. PMID: 20866960.
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Phys Rev Lett. 2010 May 14;104(19):192501. doi: 10.1103/PhysRevLett.104.192501. Epub 2010 May 10.

Migration of nuclear shell gaps studied in the d(24Ne,pγ)25Ne reaction.

Physical review letters

W N Catford, C N Timis, R C Lemmon, M Labiche, N A Orr, B Fernández-Domínguez, R Chapman, M Freer, M Chartier, H Savajols, M Rejmund, N L Achouri, N Amzal, N I Ashwood, T D Baldwin, M Burns, L Caballero, J M Casadjian, N Curtis, G de France, W Gelletly, X Liang, S D Pain, V P E Pucknell, B Rubio, O Sorlin, K Spohr, Ch Theisen, D D Warner

Affiliations

  1. Department of Physics, University of Surrey, Guildford GU2 5XH, United Kingdom.

PMID: 20866960 DOI: 10.1103/PhysRevLett.104.192501

Abstract

The transfer of neutrons onto 24Ne has been measured using a reaccelerated radioactive beam of 24Ne to study the (d,p) reaction in inverse kinematics. The unusual raising of the first 3/2+ level in 25Ne and its significance in terms of the migration of the neutron magic number from N=20 to N=16 is put on a firm footing by confirmation of this state's identity. The raised 3/2+ level is observed simultaneously with the intruder negative parity 7/2- and 3/2- levels, providing evidence for the reduction in the N=20 gap. The coincident gamma-ray decays allowed the assignment of spins as well as the transferred orbital angular momentum. The excitation energy of the 3/2+ state shows that the established USD shell model breaks down well within the sd model space and requires a revised treatment of the proton-neutron monopole interaction.

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