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Lifetime measurement of the 2₁⁺ state in ⁷⁴Rb and isospin properties of quadrupole transition strengths at N = Z

Morse, C. ; Iwasaki, Hironori ; Lemasson, Antoine ; Dewald, Alfred ; Braunroth, Thomas ; Bader, V. M. ; Baugher, Travis R. ; Bazin, Daniel ; Berryman, J. S. ; Campbell, Christopher M. ; Gade, Alexandra ; Langer, Christoph ; Lee, I. Yang ; Loelius, C. ; Lunderberg, E. ; Recchia, Francesco ; Smalley, D. ; Stroberg, Steven Ragnar ; Wadsworth, Robert ; Walz, Christopher ; Weisshaar, Dirk ; Westerberg, A. ; Whitmore, Kenneth ; Wimmer, K. (2022):
Lifetime measurement of the 2₁⁺ state in ⁷⁴Rb and isospin properties of quadrupole transition strengths at N = Z. (Publisher's Version)
In: Physics Letters B, 787, pp. 198-203. Elsevier, ISSN 0370-2693, e-ISSN 1873-2445,
DOI: 10.26083/tuprints-00012693,
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Item Type: Article
Origin: Secondary publication
Status: Publisher's Version
Title: Lifetime measurement of the 2₁⁺ state in ⁷⁴Rb and isospin properties of quadrupole transition strengths at N = Z
Language: English
Abstract:

Self-conjugate nuclei in the A ≈ 70–80 region have attracted a great deal of attention due to phenomena such as shape coexistence and increasing collectivity along the N=Zline. We investigate the structure of nuclei in this region through lifetime measurements using the GRETINA array. The first implementation of the Differential Recoil Distance Doppler Shift technique with fast radioactive beams is demonstrated and verified through a measurement of the well-known B(E2; 2₁⁺→ 0₁⁺)transition strength in ⁷⁴Kr. The method is then applied to determine the B(E2; 2₁⁺→ 0₁⁺) transition strength in ⁷⁴Rb, the heaviest odd–odd N=Z nucleus for which this quantity has been determined. This result and extended systematics along N=Z suggest the dominance of the isoscalar part of the quadrupole transition strengths in self-conjugate nuclei, as well as the possible presence of shape coexistence in ⁷⁴Rb.

Journal or Publication Title: Physics Letters B
Journal volume: 787
Publisher: Elsevier
Classification DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
Divisions: 05 Department of Physics > Institute of Nuclear Physics
Date Deposited: 02 Mar 2022 13:15
Last Modified: 10 Mar 2022 09:44
DOI: 10.26083/tuprints-00012693
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-126938
Additional Information:

Keywords: Lifetimes, Nuclear transition probabilities, Isospin

URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/12693
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