First Spectroscopy of the Near Drip-line Nucleus 40Mg

H. L. Crawford; P. Fallon; A. O. Macchiavelli; P. Doornenbal; N. Aoi; F. Browne; C. M. Campbell; M. L. Cortés; M. Cromaz; E. Ideguchi; R. Kanungo; M. Maccormick; S. Momiyama; I. Murray; M. Niikura; S. Paschalis; M. Petri; H. Sakurai; M. Salathe; P. Schrock; D. Steppenbeck; S. Takeuchi; Y. K. Tanaka; R. Taniuchi; K. Wimmer; S Chen; R. M. Clark; M. D. Jones; H. Wang

doi:10.1103/PhysRevLett.122.052501

First Spectroscopy of the Near Drip-line Nucleus ⁴⁰Mg

H. L. Crawford^*, P. Fallon, A. O. Macchiavelli, P. Doornenbal, N. Aoi, F. Browne, C. M. Campbell, M. L. Cortés, M. Cromaz, E. Ideguchi, R. Kanungo, M. Maccormick, S. Momiyama, I. Murray, M. Niikura, S. Paschalis, M. Petri, H. Sakurai, M. Salathe, P. SchrockD. Steppenbeck, S. Takeuchi, Y. K. Tanaka, R. Taniuchi, K. Wimmer, S Chen, R. M. Clark, M. D. Jones, H. Wang

^*Corresponding author for this work

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

Abstract

One of the most exotic light neutron-rich nuclei currently accessible for experimental study is Mg40, which lies at the intersection of the nucleon magic number N=28 and the neutron drip line. Low-lying excited states of Mg40 have been studied for the first time following a one-proton removal reaction from Al41, performed at the Radioactive Isotope Beam Factory of RIKEN Nishina Center with the DALI2 γ-ray array and the ZeroDegree spectrometer. Two γ-ray transitions were observed, suggesting an excitation spectrum that shows unexpected properties as compared to both the systematics along the Z=12, N≥20 Mg isotopes and available state-of-the-art theoretical model predictions. A possible explanation for the observed structure involves weak-binding effects in the low-lying excitation spectrum.

Original language	English
Article number	052501
Number of pages	6
Journal	Physical Review Letters
Volume	122
Issue number	5
Early online date	7 Feb 2019
DOIs	https://doi.org/10.1103/PhysRevLett.122.052501
Publication status	Published - 8 Feb 2019

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First Spectroscopy of the Near Drip-line Nucleus 40Mg
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Cite this

Crawford, H. L., Fallon, P., Macchiavelli, A. O., Doornenbal, P., Aoi, N., Browne, F., Campbell, C. M., Cortés, M. L., Cromaz, M., Ideguchi, E., Kanungo, R., Maccormick, M., Momiyama, S., Murray, I., Niikura, M., Paschalis, S., Petri, M., Sakurai, H., Salathe, M., ... Wang, H. (2019). First Spectroscopy of the Near Drip-line Nucleus ⁴⁰Mg. Physical Review Letters, 122(5), Article 052501. https://doi.org/10.1103/PhysRevLett.122.052501

@article{0b0d2f44e5da4f898a296ffbcece474d,

title = "First Spectroscopy of the Near Drip-line Nucleus 40Mg",

abstract = "One of the most exotic light neutron-rich nuclei currently accessible for experimental study is Mg40, which lies at the intersection of the nucleon magic number N=28 and the neutron drip line. Low-lying excited states of Mg40 have been studied for the first time following a one-proton removal reaction from Al41, performed at the Radioactive Isotope Beam Factory of RIKEN Nishina Center with the DALI2 γ-ray array and the ZeroDegree spectrometer. Two γ-ray transitions were observed, suggesting an excitation spectrum that shows unexpected properties as compared to both the systematics along the Z=12, N≥20 Mg isotopes and available state-of-the-art theoretical model predictions. A possible explanation for the observed structure involves weak-binding effects in the low-lying excitation spectrum.",

author = "Crawford, {H. L.} and P. Fallon and Macchiavelli, {A. O.} and P. Doornenbal and N. Aoi and F. Browne and Campbell, {C. M.} and Cort{\'e}s, {M. L.} and M. Cromaz and E. Ideguchi and R. Kanungo and M. Maccormick and S. Momiyama and I. Murray and M. Niikura and S. Paschalis and M. Petri and H. Sakurai and M. Salathe and P. Schrock and D. Steppenbeck and S. Takeuchi and Tanaka, {Y. K.} and R. Taniuchi and K. Wimmer and S Chen and Clark, {R. M.} and Jones, {M. D.} and H. Wang",

note = "This is an author-produced version of the published paper. Uploaded in accordance with the publisher{\textquoteright}s self-archiving policy. Further copying may not be permitted; contact the publisher for details.",

year = "2019",

month = feb,

day = "8",

doi = "10.1103/PhysRevLett.122.052501",

language = "English",

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Crawford, HL, Fallon, P, Macchiavelli, AO, Doornenbal, P, Aoi, N, Browne, F, Campbell, CM, Cortés, ML, Cromaz, M, Ideguchi, E, Kanungo, R, Maccormick, M, Momiyama, S, Murray, I, Niikura, M, Paschalis, S , Petri, M, Sakurai, H, Salathe, M, Schrock, P, Steppenbeck, D, Takeuchi, S, Tanaka, YK, Taniuchi, R, Wimmer, K, Chen, S, Clark, RM, Jones, MD & Wang, H 2019, 'First Spectroscopy of the Near Drip-line Nucleus ⁴⁰Mg', Physical Review Letters, vol. 122, no. 5, 052501. https://doi.org/10.1103/PhysRevLett.122.052501

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T1 - First Spectroscopy of the Near Drip-line Nucleus 40Mg

AU - Crawford, H. L.

AU - Fallon, P.

AU - Macchiavelli, A. O.

AU - Doornenbal, P.

AU - Aoi, N.

AU - Browne, F.

AU - Campbell, C. M.

AU - Cortés, M. L.

AU - Cromaz, M.

AU - Ideguchi, E.

AU - Kanungo, R.

AU - Maccormick, M.

AU - Momiyama, S.

AU - Murray, I.

AU - Niikura, M.

AU - Paschalis, S.

AU - Petri, M.

AU - Sakurai, H.

AU - Salathe, M.

AU - Schrock, P.

AU - Steppenbeck, D.

AU - Takeuchi, S.

AU - Tanaka, Y. K.

AU - Taniuchi, R.

AU - Wimmer, K.

AU - Chen, S

AU - Clark, R. M.

AU - Jones, M. D.

AU - Wang, H.

N1 - This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

PY - 2019/2/8

Y1 - 2019/2/8

N2 - One of the most exotic light neutron-rich nuclei currently accessible for experimental study is Mg40, which lies at the intersection of the nucleon magic number N=28 and the neutron drip line. Low-lying excited states of Mg40 have been studied for the first time following a one-proton removal reaction from Al41, performed at the Radioactive Isotope Beam Factory of RIKEN Nishina Center with the DALI2 γ-ray array and the ZeroDegree spectrometer. Two γ-ray transitions were observed, suggesting an excitation spectrum that shows unexpected properties as compared to both the systematics along the Z=12, N≥20 Mg isotopes and available state-of-the-art theoretical model predictions. A possible explanation for the observed structure involves weak-binding effects in the low-lying excitation spectrum.

AB - One of the most exotic light neutron-rich nuclei currently accessible for experimental study is Mg40, which lies at the intersection of the nucleon magic number N=28 and the neutron drip line. Low-lying excited states of Mg40 have been studied for the first time following a one-proton removal reaction from Al41, performed at the Radioactive Isotope Beam Factory of RIKEN Nishina Center with the DALI2 γ-ray array and the ZeroDegree spectrometer. Two γ-ray transitions were observed, suggesting an excitation spectrum that shows unexpected properties as compared to both the systematics along the Z=12, N≥20 Mg isotopes and available state-of-the-art theoretical model predictions. A possible explanation for the observed structure involves weak-binding effects in the low-lying excitation spectrum.

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U2 - 10.1103/PhysRevLett.122.052501

DO - 10.1103/PhysRevLett.122.052501

M3 - Letter

C2 - 30822018

AN - SCOPUS:85061264618

SN - 0031-9007

VL - 122

JO - Physical Review Letters

JF - Physical Review Letters

IS - 5

M1 - 052501

ER -

First Spectroscopy of the Near Drip-line Nucleus ⁴⁰Mg

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Stefanos Paschalis

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First Spectroscopy of the Near Drip-line Nucleus 40Mg

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Bibliographical note

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Stefanos Paschalis

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First Spectroscopy of the Near Drip-line Nucleus ⁴⁰Mg