Isospin Mixing between Low-Lying States of the Odd-Odd <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="italic">N</mi><mspace></mspace><mo>=</mo><mspace></mspace><mi mathvariant="italic">Z</mi></math></span> Nucleus <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi>C</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>54</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mi>o</mi></math></span>

A. F. Lisetskiy; A. Schmidt; I. Schneider; C. Friessner; N. Pietralla; P. von Brentano

doi:10.1103/PhysRevLett.89.012502

Isospin Mixing between Low-Lying States of the Odd-Odd $N = Z$ Nucleus ${}^{54}C o$

A. F. Lisetskiy, A. Schmidt, I. Schneider, C. Friessner, N. Pietralla, and P. von Brentano

Phys. Rev. Lett. 89, 012502 – Published 14 June 2002

Abstract

Isospin mixing of the recently discovered doublet of $4^{+}$ states with isospin quantum numbers $T = 0$ and $T = 1$ in $^{54} Co$ is analyzed. It is shown that the measured $E 2 / M 1$ multipole mixing ratios can be used to estimate the isospin mixing of these states. Combining the new experimental data with results of a shell model calculation, the amount of isospin mixing is found to be $\approx 0.2 %$ .

Received 21 February 2002

DOI:https://doi.org/10.1103/PhysRevLett.89.012502

Authors & Affiliations

A. F. Lisetskiy¹, A. Schmidt¹, I. Schneider¹, C. Friessner¹, N. Pietralla^1,2, and P. von Brentano

¹Institut für Kernphysik, Universität zu Köln, 50937 Köln, Germany
²Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520-8124