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Dive into the research topics where K. Pepper is active.

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Featured researches published by K. Pepper.


Physical Review C | 2008

Excited intruder states in (32)Mg

Vandana Tripathi; S. L. Tabor; P. Bender; C. R. Hoffman; Sangjin Lee; K. Pepper; M. Perry; P. F. Mantica; J. M Cook; Jorge Pereira; J. S Pinter; J. B Stoker; D. Weisshaar; Yutaka Utsuno; T. Otsuka

The low energy level structure of N = 20 32 Mg obtained via β-delayed γ spectroscopy is reported. The level structure of 32 Mg is found to be completely dominated by intruders. An inversion between the 1p-1h and 3p-3h states is observed for the negative parity states, similar to the 0p-0h and 2p-2h inversion for the positive parity states in these N ∼ 20 nuclei. The intruder excited states, both positive and negative parity, are reasonably explained by Monte Carlo shell model calculations, which suggest a shrinking N = 20 shell gap with decreasing Z.


Physical Review Letters | 2008

Intruder configurations in the A=33 isobars: 33Mg and 33Al.

Vandana Tripathi; S. L. Tabor; P. Mantica; Yutaka Utsuno; P. Bender; J. M. Cook; C. R. Hoffman; Sangjin Lee; Takaharu Otsuka; Jorge Pereira; M. Perry; K. Pepper; J. S. Pinter; J. B. Stoker; Alexander Volya; D. Weisshaar


Physical Review C | 2007

Competition between normal and intruder states inside the island of inversion

Vandana Tripathi; S. L. Tabor; P. Mantica; Yutaka Utsuno; P. Bender; J. M. Cook; C. R. Hoffman; Sangjin Lee; T. Otsuka; Jorge Pereira; M. Perry; K. Pepper; J. S. Pinter; J. B. Stoker; Alexander Volya; D. Weisshaar


Physical Review Letters | 2010

Tripathi et al. Reply

Vandana Tripathi; S. L. Tabor; P. F. Mantica; Y. Utsuno; P. Bender; J. Cook; C. R. Hoffman; Sangjin Lee; T. Otsuka; J. Pereira; M. Perry; K. Pepper; J. S. Pinter; J. Stoker; Alexander Volya; D. Weisshaar


Physical Review Letters | 2010

Comment on "Intruder Configurations in the A=33 Isobars: Mg-33 and Al-33" Reply

Vandana Tripathi; S. L. Tabor; P. F. Mantica; Y. Utsuno; P. Bender; J. M. Cook; C. R. Hoffman; Sangjin Lee; T. Otsuka; Jorge Pereira; M. Perry; K. Pepper; J. S. Pinter; J. B. Stoker; Alexander Volya; D. Weisshaar


Proceedings of the Fourth International Conference | 2008

SPECTROSCOPY OF 28,29,30NA: EVOLUTION OF SHELL STRUCTURE WITH ISOSPIN

Vandana Tripathi; S. L. Tabor; P. Bender; C. R. Hoffman; Sangjin Lee; K. Pepper; M. Perry; M. Wiedeking; P. F. Mantica; J. M. Cook; Angela Davies; S. N. Liddick; W. F. Mueller; J. Periera; J. S. Pinter; J. B. Stoker; A. Stolz; B. E. Tomlin; D. Weishaar; Yutaka Utsuno; Takaharu Otsuka


Physical Review Letters | 2008

Intruder Configurations in the A=33 Isobars: {sup 33}Mg and {sup 33}Al

Vandana Tripathi; S. L. Tabor; P. Bender; C. R. Hoffman; Sangjin Lee; M. Perry; K. Pepper; Alexander Volya; Y. Utsuno; J. M. Cook; Jorge Pereira; D. Weisshaar; Riken, Hirosawa, Wako-shi, Saitama ]; J. S. Pinter; J. B. Stoker


Physical Review Letters | 2008

Intruder Configurations in the A=33 isobars: (33)Mg and (33)Al

Vandana Tripathi; S. L. Tabor; P. F. Mantica; Y. Utsuno; P. Bender; J. M. Cook; C. R. Hoffman; Sangjin Lee; T. Otsuka; Jorge Pereira; M. Perry; K. Pepper; J. S. Pinter; J. B. Stoker; Alexander Volya; D. Weisshaar


Physical Review Letters | 2008

Intruder Configurations in theA=33Isobars:Mg33andAl33

Vandana Tripathi; S. L. Tabor; P. F. Mantica; Y. Utsuno; P. Bender; J. M. Cook; C. R. Hoffman; Sangjin Lee; T. Otsuka; Jorge Pereira; M. Perry; K. Pepper; J. S. Pinter; J. B. Stoker; Alexander Volya; D. Weisshaar


Physical Review C | 2008

Excited intruder states in {sup 32}Mg

Vandana Tripathi; S. L. Tabor; P. Bender; C. R. Hoffman; Sangjin Lee; K. Pepper; M. Perry; Y. Utsuno; Riken, Hirosawa, Wako-shi, Saitama ]; P. F. Mantica; J. S. Pinter; Jorge Pereira; D. Weisshaar

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S. L. Tabor

Florida State University

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M. Perry

Florida State University

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P. Bender

Florida State University

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Sangjin Lee

Florida State University

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C. R. Hoffman

Florida State University

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J. S. Pinter

Michigan State University

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Jorge Pereira

Michigan State University

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J. B. Stoker

Michigan State University

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