Shell structure beyond the proton drip line studied via proton emission from deformed 141Ho

M. Karny; K. P. Rykaczewski; R. K. Grzywacz; J. C. Batchelder; C. R. Bingham; C. Goodin; C. J. Gross; J. H. Hamilton; A. Korgul; W. Królas; S. N. Liddick; K. Li; K. H. Maier; C. Mazzocchi; A. Piechaczek; K. Rykaczewski; D. Schapira; D. Simpson; M. N. Tantawy; J. A. Winger; C. H. Yu; E. F. Zganjar; N. Nikolov; J. Dobaczewski; A. T. Kruppa; W. Nazarewicz; M. V. Stoitsov

doi:10.1016/j.physletb.2008.04.056

Shell structure beyond the proton drip line studied via proton emission from deformed ¹⁴¹Ho

M. Karny, K. P. Rykaczewski, R. K. Grzywacz, J. C. Batchelder, C. R. Bingham, C. Goodin, C. J. Gross, J. H. Hamilton, A. Korgul, W. Królas, S. N. Liddick, K. Li, K. H. Maier, C. Mazzocchi, A. Piechaczek, K. Rykaczewski, D. Schapira, D. Simpson, M. N. Tantawy, J. A. WingerC. H. Yu, E. F. Zganjar, N. Nikolov, J. Dobaczewski, A. T. Kruppa, W. Nazarewicz, M. V. Stoitsov

Neutrino Research

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

51 Scopus citations

Abstract

Fine structure in proton emission from the 7 / 2^- [523] ground state and from the 1 / 2⁺ [411] isomer in deformed nucleus ¹⁴¹Ho was studied by means of fusion-evaporation reactions and digital signal processing. Proton transitions to the first excited 2⁺ state in ¹⁴⁰Dy, with the branching ratio of I_p^{g s} (2⁺) = 0.9 ± 0.2 % and I_p^m (2⁺) = 1.7 ± 0.5 %, were observed. The data are analyzed within the non-adiabatic weak coupling model assuming a large quadrupole deformation of the daughter nucleus ¹⁴⁰Dy as predicted by the self-consistent theory. Implications of this result on coexistence effects around N = 74 are discussed. Significant modifications of the proton shell structure when going from the valley of beta stability to the proton drip line are discussed in terms of self-consistent theory involving the two-body tensor interaction.

Original language	English
Pages (from-to)	52-56
Number of pages	5
Journal	Physics Letters B
Volume	664
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physletb.2008.04.056
State	Published - Jun 12 2008

Funding

ORNL is managed by UT-Battelle, LLC, for the US Department of Energy under Contract DE-AC05-00OR22725. This work was also supported by the US DOE through Contract Nos. DE-FG02-96ER40983, DE-FG02-96ER40963, DE-FC02-07ER41457, DE-FG02-96ER41006, DE-FG05-88ER40407, DE-FG02-96ER40978, and DE-AC05-76OR00033; by the National Nuclear Security Administration through DOE Research Grant DE-FG03-03NA00083; by the Polish Ministry of Science; by the Foundation for Polish Science (A.K.); by the Academy of Finland and University of Jyväskylä within the FIDIPRO program; and by Hungarian OTKA grant No. T46791.

Keywords

Proton radioactivity
Proton shell structure
Two-body tensor interactions

Access to Document

10.1016/j.physletb.2008.04.056

Cite this

Karny, M., Rykaczewski, K. P., Grzywacz, R. K., Batchelder, J. C., Bingham, C. R., Goodin, C., Gross, C. J., Hamilton, J. H., Korgul, A., Królas, W., Liddick, S. N., Li, K., Maier, K. H., Mazzocchi, C., Piechaczek, A., Rykaczewski, K., Schapira, D., Simpson, D., Tantawy, M. N., ... Stoitsov, M. V. (2008). Shell structure beyond the proton drip line studied via proton emission from deformed ¹⁴¹Ho. Physics Letters B, 664(1-2), 52-56. https://doi.org/10.1016/j.physletb.2008.04.056

@article{511c57c5d6074b2484919942d6bdce17,

title = "Shell structure beyond the proton drip line studied via proton emission from deformed 141Ho",

abstract = "Fine structure in proton emission from the 7 / 2- [523] ground state and from the 1 / 2+ [411] isomer in deformed nucleus 141Ho was studied by means of fusion-evaporation reactions and digital signal processing. Proton transitions to the first excited 2+ state in 140Dy, with the branching ratio of Ipg s (2+) = 0.9 ± 0.2 \% and Ipm (2+) = 1.7 ± 0.5 \%, were observed. The data are analyzed within the non-adiabatic weak coupling model assuming a large quadrupole deformation of the daughter nucleus 140Dy as predicted by the self-consistent theory. Implications of this result on coexistence effects around N = 74 are discussed. Significant modifications of the proton shell structure when going from the valley of beta stability to the proton drip line are discussed in terms of self-consistent theory involving the two-body tensor interaction.",

keywords = "Proton radioactivity, Proton shell structure, Two-body tensor interactions",

author = "M. Karny and Rykaczewski, \{K. P.\} and Grzywacz, \{R. K.\} and Batchelder, \{J. C.\} and Bingham, \{C. R.\} and C. Goodin and Gross, \{C. J.\} and Hamilton, \{J. H.\} and A. Korgul and W. Kr{\'o}las and Liddick, \{S. N.\} and K. Li and Maier, \{K. H.\} and C. Mazzocchi and A. Piechaczek and K. Rykaczewski and D. Schapira and D. Simpson and Tantawy, \{M. N.\} and Winger, \{J. A.\} and Yu, \{C. H.\} and Zganjar, \{E. F.\} and N. Nikolov and J. Dobaczewski and Kruppa, \{A. T.\} and W. Nazarewicz and Stoitsov, \{M. V.\}",

year = "2008",

month = jun,

day = "12",

doi = "10.1016/j.physletb.2008.04.056",

language = "English",

volume = "664",

pages = "52--56",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-2",

}

Karny, M, Rykaczewski, KP, Grzywacz, RK, Batchelder, JC, Bingham, CR, Goodin, C, Gross, CJ, Hamilton, JH, Korgul, A, Królas, W, Liddick, SN, Li, K, Maier, KH, Mazzocchi, C, Piechaczek, A, Rykaczewski, K, Schapira, D, Simpson, D, Tantawy, MN, Winger, JA, Yu, CH, Zganjar, EF, Nikolov, N, Dobaczewski, J, Kruppa, AT, Nazarewicz, W & Stoitsov, MV 2008, 'Shell structure beyond the proton drip line studied via proton emission from deformed ¹⁴¹Ho', Physics Letters B, vol. 664, no. 1-2, pp. 52-56. https://doi.org/10.1016/j.physletb.2008.04.056

TY - JOUR

T1 - Shell structure beyond the proton drip line studied via proton emission from deformed 141Ho

AU - Karny, M.

AU - Rykaczewski, K. P.

AU - Grzywacz, R. K.

AU - Batchelder, J. C.

AU - Bingham, C. R.

AU - Goodin, C.

AU - Gross, C. J.

AU - Hamilton, J. H.

AU - Korgul, A.

AU - Królas, W.

AU - Liddick, S. N.

AU - Li, K.

AU - Maier, K. H.

AU - Mazzocchi, C.

AU - Piechaczek, A.

AU - Rykaczewski, K.

AU - Schapira, D.

AU - Simpson, D.

AU - Tantawy, M. N.

AU - Winger, J. A.

AU - Yu, C. H.

AU - Zganjar, E. F.

AU - Nikolov, N.

AU - Dobaczewski, J.

AU - Kruppa, A. T.

AU - Nazarewicz, W.

AU - Stoitsov, M. V.

PY - 2008/6/12

Y1 - 2008/6/12

N2 - Fine structure in proton emission from the 7 / 2- [523] ground state and from the 1 / 2+ [411] isomer in deformed nucleus 141Ho was studied by means of fusion-evaporation reactions and digital signal processing. Proton transitions to the first excited 2+ state in 140Dy, with the branching ratio of Ipg s (2+) = 0.9 ± 0.2 % and Ipm (2+) = 1.7 ± 0.5 %, were observed. The data are analyzed within the non-adiabatic weak coupling model assuming a large quadrupole deformation of the daughter nucleus 140Dy as predicted by the self-consistent theory. Implications of this result on coexistence effects around N = 74 are discussed. Significant modifications of the proton shell structure when going from the valley of beta stability to the proton drip line are discussed in terms of self-consistent theory involving the two-body tensor interaction.

AB - Fine structure in proton emission from the 7 / 2- [523] ground state and from the 1 / 2+ [411] isomer in deformed nucleus 141Ho was studied by means of fusion-evaporation reactions and digital signal processing. Proton transitions to the first excited 2+ state in 140Dy, with the branching ratio of Ipg s (2+) = 0.9 ± 0.2 % and Ipm (2+) = 1.7 ± 0.5 %, were observed. The data are analyzed within the non-adiabatic weak coupling model assuming a large quadrupole deformation of the daughter nucleus 140Dy as predicted by the self-consistent theory. Implications of this result on coexistence effects around N = 74 are discussed. Significant modifications of the proton shell structure when going from the valley of beta stability to the proton drip line are discussed in terms of self-consistent theory involving the two-body tensor interaction.

KW - Proton radioactivity

KW - Proton shell structure

KW - Two-body tensor interactions

UR - https://www.scopus.com/pages/publications/44249107248

U2 - 10.1016/j.physletb.2008.04.056

DO - 10.1016/j.physletb.2008.04.056

M3 - Article

AN - SCOPUS:44249107248

SN - 0370-2693

VL - 664

SP - 52

EP - 56

JO - Physics Letters B

JF - Physics Letters B

IS - 1-2

ER -