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

C. Morse; H. Iwasaki; A. Lemasson; A. Dewald; T. Braunroth; V. M. Bader; T. Baugher; D. Bazin; J. S. Berryman; C. M. Campbell; A. Gade; C. Langer; I. Y. Lee; C. Loelius; E. Lunderberg; F. Rechia; D. Smalley; S. R. Stroberg; R. Wadsworth; C. Walz; D. Weisshaar; A. Westerberg; K. Whitmore; K. Wimmer

doi:10.1016/j.physletb.2018.10.064

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

C. Morse^*, H. Iwasaki, A. Lemasson, A. Dewald, T. Braunroth, V. M. Bader, T. Baugher, D. Bazin, J. S. Berryman, C. M. Campbell, A. Gade, C. Langer, I. Y. Lee, C. Loelius, E. Lunderberg, F. Rechia, D. Smalley, S. R. Stroberg, R. Wadsworth, C. WalzD. Weisshaar, A. Westerberg, K. Whitmore, K. Wimmer

^*Corresponding author for this work

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

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=Z line. 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.

Original language	English
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Early online date	8 Nov 2018
DOIs	https://doi.org/10.1016/j.physletb.2018.10.064
Publication status	Published - 5 Dec 2018

Bibliographical note

Keywords

Isospin
Lifetimes
Nuclear transition probabilities

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10.1016/j.physletb.2018.10.064

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Morse, C., Iwasaki, H., Lemasson, A., Dewald, A., Braunroth, T., Bader, V. M., Baugher, T., Bazin, D., Berryman, J. S., Campbell, C. M., Gade, A., Langer, C., Lee, I. Y., Loelius, C., Lunderberg, E., Rechia, F., Smalley, D., Stroberg, S. R., Wadsworth, R., ... Wimmer, K. (2018). Lifetime measurement of the 2₁ ⁺ state in ⁷⁴Rb and isospin properties of quadrupole transition strengths at N = Z. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. https://doi.org/10.1016/j.physletb.2018.10.064

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

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=Z line. 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.",

keywords = "Isospin, Lifetimes, Nuclear transition probabilities",

author = "C. Morse and H. Iwasaki and A. Lemasson and A. Dewald and T. Braunroth and Bader, {V. M.} and T. Baugher and D. Bazin and Berryman, {J. S.} and Campbell, {C. M.} and A. Gade and C. Langer and Lee, {I. Y.} and C. Loelius and E. Lunderberg and F. Rechia and D. Smalley and Stroberg, {S. R.} and R. Wadsworth and C. Walz and D. Weisshaar and A. Westerberg and K. Whitmore and K. Wimmer",

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doi = "10.1016/j.physletb.2018.10.064",

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Morse, C, Iwasaki, H, Lemasson, A, Dewald, A, Braunroth, T, Bader, VM, Baugher, T, Bazin, D, Berryman, JS, Campbell, CM, Gade, A, Langer, C, Lee, IY, Loelius, C, Lunderberg, E, Rechia, F, Smalley, D, Stroberg, SR, Wadsworth, R, Walz, C, Weisshaar, D, Westerberg, A, Whitmore, K & Wimmer, K 2018, 'Lifetime measurement of the 2₁ ⁺ state in ⁷⁴Rb and isospin properties of quadrupole transition strengths at N = Z', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. https://doi.org/10.1016/j.physletb.2018.10.064

TY - JOUR

T1 - Lifetime measurement of the 21 + state in 74Rb and isospin properties of quadrupole transition strengths at N = Z

AU - Morse, C.

AU - Iwasaki, H.

AU - Lemasson, A.

AU - Dewald, A.

AU - Braunroth, T.

AU - Bader, V. M.

AU - Baugher, T.

AU - Bazin, D.

AU - Berryman, J. S.

AU - Campbell, C. M.

AU - Gade, A.

AU - Langer, C.

AU - Lee, I. Y.

AU - Loelius, C.

AU - Lunderberg, E.

AU - Rechia, F.

AU - Smalley, D.

AU - Stroberg, S. R.

AU - Wadsworth, R.

AU - Walz, C.

AU - Weisshaar, D.

AU - Westerberg, A.

AU - Whitmore, K.

AU - Wimmer, K.

PY - 2018/12/5

Y1 - 2018/12/5

N2 - 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=Z line. 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.

AB - 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=Z line. 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.

KW - Isospin

KW - Lifetimes

KW - Nuclear transition probabilities

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U2 - 10.1016/j.physletb.2018.10.064

DO - 10.1016/j.physletb.2018.10.064

M3 - Article

AN - SCOPUS:85057255159

SN - 0370-2693

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

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

ER -

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

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Nuclear Physics Consolidated Grant

Nuclear Physics Consolidated Grant

Cite this

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

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Projects

Nuclear Physics Consolidated Grant

Nuclear Physics Consolidated Grant

Cite this

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