Intruder configurations of excited states in the neutron-rich isotopes P 33 and P 34

R. S. Lubna; Vandanam Tripathi; S. L. Tabor; P. L. Tai; K. Kravvaris; P. C. Bender; A. Volya; M. Bouhelal; C. J. Chiara; M. P. Carpenter; R. V.F. Janssens; T. Lauritsen; E. A. McCutchan; P. Fallon; A. O. MacChiavelli; S. Paschalis; M. Petri; W. Reviol; D. G. Sarantites

doi:10.1103/PhysRevC.97.044312

Intruder configurations of excited states in the neutron-rich isotopes P 33 and P 34

R. S. Lubna^*, Vandanam Tripathi, S. L. Tabor, P. L. Tai, K. Kravvaris, P. C. Bender, A. Volya, M. Bouhelal, C. J. Chiara, M. P. Carpenter, R. V.F. Janssens, T. Lauritsen, E. A. McCutchan, P. Fallon, A. O. MacChiavelli, S. Paschalis, M. Petri, W. Reviol, D. G. Sarantites

^*Corresponding author for this work

Physics

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

Abstract

Excited states in the neutron-rich isotopes P33 and P34 were populated by the O18+O18 fusion-evaporation reaction at Elab=24 MeV. The Gammasphere array was used along with the Microball particle detector array to detect γ transitions in coincidence with the charged particles emitted from the compound nucleus S36. The use of Microball enabled the selection of the proton emission channel. It also helped in determining the exact position and energy of the emitted proton; this was later employed in kinematic Doppler corrections. 16 new transitions and 13 new states were observed in P33 and 21 γ rays and 20 energy levels were observed in P34 for the first time. The nearly 4π geometry of Gammasphere allowed the measurement of γ-ray angular distributions leading to spin assignments for many states. The experimental observations for both isotopes were interpreted with the help of shell-model calculations using the (0+1)ω PSDPF interaction. The calculations accounted for both the 0p-0h and 1p-1h states reasonably well and indicated that 2p-2h excitations might dominate the higher-spin configurations in both P33 and P34.

Original language	English
Article number	044312
Journal	Physical Review C
Volume	97
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.97.044312
Publication status	Published - 16 Apr 2018

Bibliographical note

Funding Information:
This work was supported by US National Science Foundation under Grant No. NSF 140-1574 and the US Department of Energy Office of Science, Office of Nuclear Physics under Grants No. DE-SC0009883 (FSU), No. DE-AC02-05CH-11231 (LBNL), No. DE-AC02-06CH-1137 (ANL), No. DE-FG02-88ER-40406 (W.U.), and No. DE-FG02-94ER-40834 (UMD). This research used resources of ANL's ATLAS facility, which is a DOE Office of Science User facility.

Funding Information:
This work was supported by US National Science Foundation under Grant No. NSF 140-1574 and the US Department of Energy Office of Science, Office of Nuclear Physics under Grants No. DE-SC0009883 (FSU), No. DE-AC02-05CH-11231 (LBNL), No. DE-AC02-06CH-1137 (ANL), No. DE-FG02-88ER-40406 (W.U.), and No. DE-FG02-94ER-40834 (UMD). This research used resources of ANL's ATLAS facility, which is a DOE Office of Science User facility.

Publisher Copyright:
© 2018 American Physical Society.

Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.

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10.1103/PhysRevC.97.044312

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Lubna, R. S., Tripathi, V., Tabor, S. L., Tai, P. L., Kravvaris, K., Bender, P. C., Volya, A., Bouhelal, M., Chiara, C. J., Carpenter, M. P., Janssens, R. V. F., Lauritsen, T., McCutchan, E. A., Fallon, P., MacChiavelli, A. O., Paschalis, S., Petri, M., Reviol, W., & Sarantites, D. G. (2018). Intruder configurations of excited states in the neutron-rich isotopes P 33 and P 34. Physical Review C, 97(4), Article 044312. https://doi.org/10.1103/PhysRevC.97.044312

@article{7ad0c52113d843ee9bc7879c014796d4,

title = "Intruder configurations of excited states in the neutron-rich isotopes P 33 and P 34",

abstract = "Excited states in the neutron-rich isotopes P33 and P34 were populated by the O18+O18 fusion-evaporation reaction at Elab=24 MeV. The Gammasphere array was used along with the Microball particle detector array to detect γ transitions in coincidence with the charged particles emitted from the compound nucleus S36. The use of Microball enabled the selection of the proton emission channel. It also helped in determining the exact position and energy of the emitted proton; this was later employed in kinematic Doppler corrections. 16 new transitions and 13 new states were observed in P33 and 21 γ rays and 20 energy levels were observed in P34 for the first time. The nearly 4π geometry of Gammasphere allowed the measurement of γ-ray angular distributions leading to spin assignments for many states. The experimental observations for both isotopes were interpreted with the help of shell-model calculations using the (0+1)ω PSDPF interaction. The calculations accounted for both the 0p-0h and 1p-1h states reasonably well and indicated that 2p-2h excitations might dominate the higher-spin configurations in both P33 and P34.",

author = "Lubna, {R. S.} and Vandanam Tripathi and Tabor, {S. L.} and Tai, {P. L.} and K. Kravvaris and Bender, {P. C.} and A. Volya and M. Bouhelal and Chiara, {C. J.} and Carpenter, {M. P.} and Janssens, {R. V.F.} and T. Lauritsen and McCutchan, {E. A.} and P. Fallon and MacChiavelli, {A. O.} and S. Paschalis and M. Petri and W. Reviol and Sarantites, {D. G.}",

note = "Funding Information: This work was supported by US National Science Foundation under Grant No. NSF 140-1574 and the US Department of Energy Office of Science, Office of Nuclear Physics under Grants No. DE-SC0009883 (FSU), No. DE-AC02-05CH-11231 (LBNL), No. DE-AC02-06CH-1137 (ANL), No. DE-FG02-88ER-40406 (W.U.), and No. DE-FG02-94ER-40834 (UMD). This research used resources of ANL's ATLAS facility, which is a DOE Office of Science User facility. Funding Information: This work was supported by US National Science Foundation under Grant No. NSF 140-1574 and the US Department of Energy Office of Science, Office of Nuclear Physics under Grants No. DE-SC0009883 (FSU), No. DE-AC02-05CH-11231 (LBNL), No. DE-AC02-06CH-1137 (ANL), No. DE-FG02-88ER-40406 (W.U.), and No. DE-FG02-94ER-40834 (UMD). This research used resources of ANL's ATLAS facility, which is a DOE Office of Science User facility. Publisher Copyright: {\textcopyright} 2018 American Physical Society. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",

year = "2018",

month = apr,

day = "16",

doi = "10.1103/PhysRevC.97.044312",

language = "English",

volume = "97",

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Lubna, RS, Tripathi, V, Tabor, SL, Tai, PL, Kravvaris, K, Bender, PC, Volya, A, Bouhelal, M, Chiara, CJ, Carpenter, MP, Janssens, RVF, Lauritsen, T, McCutchan, EA, Fallon, P, MacChiavelli, AO, Paschalis, S , Petri, M, Reviol, W & Sarantites, DG 2018, 'Intruder configurations of excited states in the neutron-rich isotopes P 33 and P 34', Physical Review C, vol. 97, no. 4, 044312. https://doi.org/10.1103/PhysRevC.97.044312

TY - JOUR

T1 - Intruder configurations of excited states in the neutron-rich isotopes P 33 and P 34

AU - Lubna, R. S.

AU - Tripathi, Vandanam

AU - Tabor, S. L.

AU - Tai, P. L.

AU - Kravvaris, K.

AU - Bender, P. C.

AU - Volya, A.

AU - Bouhelal, M.

AU - Chiara, C. J.

AU - Carpenter, M. P.

AU - Janssens, R. V.F.

AU - Lauritsen, T.

AU - McCutchan, E. A.

AU - Fallon, P.

AU - MacChiavelli, A. O.

AU - Paschalis, S.

AU - Petri, M.

AU - Reviol, W.

AU - Sarantites, D. G.

N1 - Funding Information: This work was supported by US National Science Foundation under Grant No. NSF 140-1574 and the US Department of Energy Office of Science, Office of Nuclear Physics under Grants No. DE-SC0009883 (FSU), No. DE-AC02-05CH-11231 (LBNL), No. DE-AC02-06CH-1137 (ANL), No. DE-FG02-88ER-40406 (W.U.), and No. DE-FG02-94ER-40834 (UMD). This research used resources of ANL's ATLAS facility, which is a DOE Office of Science User facility. Funding Information: This work was supported by US National Science Foundation under Grant No. NSF 140-1574 and the US Department of Energy Office of Science, Office of Nuclear Physics under Grants No. DE-SC0009883 (FSU), No. DE-AC02-05CH-11231 (LBNL), No. DE-AC02-06CH-1137 (ANL), No. DE-FG02-88ER-40406 (W.U.), and No. DE-FG02-94ER-40834 (UMD). This research used resources of ANL's ATLAS facility, which is a DOE Office of Science User facility. Publisher Copyright: © 2018 American Physical Society. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 2018/4/16

Y1 - 2018/4/16

N2 - Excited states in the neutron-rich isotopes P33 and P34 were populated by the O18+O18 fusion-evaporation reaction at Elab=24 MeV. The Gammasphere array was used along with the Microball particle detector array to detect γ transitions in coincidence with the charged particles emitted from the compound nucleus S36. The use of Microball enabled the selection of the proton emission channel. It also helped in determining the exact position and energy of the emitted proton; this was later employed in kinematic Doppler corrections. 16 new transitions and 13 new states were observed in P33 and 21 γ rays and 20 energy levels were observed in P34 for the first time. The nearly 4π geometry of Gammasphere allowed the measurement of γ-ray angular distributions leading to spin assignments for many states. The experimental observations for both isotopes were interpreted with the help of shell-model calculations using the (0+1)ω PSDPF interaction. The calculations accounted for both the 0p-0h and 1p-1h states reasonably well and indicated that 2p-2h excitations might dominate the higher-spin configurations in both P33 and P34.

AB - Excited states in the neutron-rich isotopes P33 and P34 were populated by the O18+O18 fusion-evaporation reaction at Elab=24 MeV. The Gammasphere array was used along with the Microball particle detector array to detect γ transitions in coincidence with the charged particles emitted from the compound nucleus S36. The use of Microball enabled the selection of the proton emission channel. It also helped in determining the exact position and energy of the emitted proton; this was later employed in kinematic Doppler corrections. 16 new transitions and 13 new states were observed in P33 and 21 γ rays and 20 energy levels were observed in P34 for the first time. The nearly 4π geometry of Gammasphere allowed the measurement of γ-ray angular distributions leading to spin assignments for many states. The experimental observations for both isotopes were interpreted with the help of shell-model calculations using the (0+1)ω PSDPF interaction. The calculations accounted for both the 0p-0h and 1p-1h states reasonably well and indicated that 2p-2h excitations might dominate the higher-spin configurations in both P33 and P34.

UR - http://www.scopus.com/inward/record.url?scp=85045844790&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.97.044312

DO - 10.1103/PhysRevC.97.044312

M3 - Article

AN - SCOPUS:85045844790

SN - 2469-9985

VL - 97

JO - Physical Review C

JF - Physical Review C

IS - 4

M1 - 044312

ER -

Intruder configurations of excited states in the neutron-rich isotopes P 33 and P 34

Abstract

Bibliographical note

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