Delayed g9/2 Alignment in the N=Z Nucleus 72Kr

de Angelis, G.; Fahlander, Claes; Gadea, A.; Farnea, E.; Gelletly, W.; Aprahamian, A.; Bazzacco, D.; Becker, F.; Bizzeti, P. G.; Bizzeti-Sona, A.; Brandolini, F.; de Acuna, D.; De Poli, M.; Eberth, J.; Foltescu, D.; Lenzi, S. M.; Lunardi, S.; Martinez, T.; Napoli, D. R.; Pavan, P.; Petrache, C. M.; Alvarez, C. R.; Rudolph, Dirk; Rubio, B.; Satula, W.; Skoda, S.; Spolaore, P.; Thomas, H. G.; Ur, C. A.; Wyss, R.

Delayed g9/2 Alignment in the N=Z Nucleus 72Kr

Mark

de Angelis, G. ; Fahlander, Claes ^LU ; Gadea, A. ; Farnea, E. ; Gelletly, W. ; Aprahamian, A. ; Bazzacco, D. ; Becker, F. ; Bizzeti, P. G. and Bizzeti-Sona, A. , et al. (1997) In Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics 415(3). p.217-222

Abstract: The structure of Kr-72 has been investigated at GASP through the Ca-40(Ca-40,2 alpha) reaction at a beam energy of 160 MeV using the 4 pi ISIS Si-ball for reaction channel selection. The level scheme has been extended up to an excitation energy of approximate to 8.5 MeV. The spins and parities of the observed levels are assigned tentatively. The observed band shows the predicted change from oblate to prolate shape. The four quasi-particle g(9/2) alignment is found to be significantly delayed in rotational frequency with respect to the heavier Kr isotopes. Such a delay contradicts the predictions of standard mean-field calculations and may reflect either additional correlations in the T = 0 pairing channel or coupling to vibrational degrees... (More); The structure of Kr-72 has been investigated at GASP through the Ca-40(Ca-40,2 alpha) reaction at a beam energy of 160 MeV using the 4 pi ISIS Si-ball for reaction channel selection. The level scheme has been extended up to an excitation energy of approximate to 8.5 MeV. The spins and parities of the observed levels are assigned tentatively. The observed band shows the predicted change from oblate to prolate shape. The four quasi-particle g(9/2) alignment is found to be significantly delayed in rotational frequency with respect to the heavier Kr isotopes. Such a delay contradicts the predictions of standard mean-field calculations and may reflect either additional correlations in the T = 0 pairing channel or coupling to vibrational degrees of freedom or both. (C) 1997 Elsevier Science B.V. (Less)

Please use this url to cite or link to this publication: https://lup.lub.lu.se/record/3963406

author

de Angelis, G. ; Fahlander, Claes ^LU ; Gadea, A. ; Farnea, E. ; Gelletly, W. ; Aprahamian, A. ; Bazzacco, D. ; Becker, F. ; Bizzeti, P. G. and Bizzeti-Sona, A. , et al. (More)

de Angelis, G. ; Fahlander, Claes ^LU ; Gadea, A. ; Farnea, E. ; Gelletly, W. ; Aprahamian, A. ; Bazzacco, D. ; Becker, F. ; Bizzeti, P. G. ; Bizzeti-Sona, A. ; Brandolini, F. ; de Acuna, D. ; De Poli, M. ; Eberth, J. ; Foltescu, D. ; Lenzi, S. M. ; Lunardi, S. ; Martinez, T. ; Napoli, D. R. ; Pavan, P. ; Petrache, C. M. ; Alvarez, C. R. ; Rudolph, Dirk ^LU

; Rubio, B. ; Satula, W. ; Skoda, S. ; Spolaore, P. ; Thomas, H. G. ; Ur, C. A. and Wyss, R. (Less)

organization

Nuclear Structure-lup-obsolete (research group)

publishing date

1997

type

Contribution to journal

publication status

published

subject

Subatomic Physics

in

Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics

volume

415

issue

3

pages

217 - 222

publisher

Elsevier

external identifiers

scopus:0043133747

ISSN

0370-2693

DOI

10.1016/S0370-2693(97)01217-3

language

English

LU publication?

no

additional info

3

id

e62a2091-3037-45f6-b7bc-ec4a5d94e6f8 (old id 3963406)

alternative location

http://www.sciencedirect.com/science/article/pii/S0370269397012173

date added to LUP

2016-04-01 15:50:12

date last changed

2022-01-28 07:27:47

@article{e62a2091-3037-45f6-b7bc-ec4a5d94e6f8,
  abstract     = {{The structure of Kr-72 has been investigated at GASP through the Ca-40(Ca-40,2 alpha) reaction at a beam energy of 160 MeV using the 4 pi ISIS Si-ball for reaction channel selection. The level scheme has been extended up to an excitation energy of approximate to 8.5 MeV. The spins and parities of the observed levels are assigned tentatively. The observed band shows the predicted change from oblate to prolate shape. The four quasi-particle g(9/2) alignment is found to be significantly delayed in rotational frequency with respect to the heavier Kr isotopes. Such a delay contradicts the predictions of standard mean-field calculations and may reflect either additional correlations in the T = 0 pairing channel or coupling to vibrational degrees of freedom or both. (C) 1997 Elsevier Science B.V.}},
  author       = {{de Angelis, G. and Fahlander, Claes and Gadea, A. and Farnea, E. and Gelletly, W. and Aprahamian, A. and Bazzacco, D. and Becker, F. and Bizzeti, P. G. and Bizzeti-Sona, A. and Brandolini, F. and de Acuna, D. and De Poli, M. and Eberth, J. and Foltescu, D. and Lenzi, S. M. and Lunardi, S. and Martinez, T. and Napoli, D. R. and Pavan, P. and Petrache, C. M. and Alvarez, C. R. and Rudolph, Dirk and Rubio, B. and Satula, W. and Skoda, S. and Spolaore, P. and Thomas, H. G. and Ur, C. A. and Wyss, R.}},
  issn         = {{0370-2693}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{217--222}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics}},
  title        = {{Delayed g9/2 Alignment in the N=Z Nucleus 72Kr}},
  url          = {{http://dx.doi.org/10.1016/S0370-2693(97)01217-3}},
  doi          = {{10.1016/S0370-2693(97)01217-3}},
  volume       = {{415}},
  year         = {{1997}},
}

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Delayed g9/2 Alignment in the N=Z Nucleus 72Kr