https://doi.org/10.1140/epja/s10050-021-00443-6
Regular Article – Experimental Physics
Angular distribution of
rays emitted by oriented nuclei: the case of
Mo formed in the reaction
Li+
Y
1
State Key Laboratory of Software Development Environment, Beihang University, 100191, Beijing, China
2
School of Physics, Beihang University, 100191, Beijing, China
3
Dipartimento di Fisica, Universitá di Padova, 35131, Padua, Italy
4
Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Padua, Italy
5
College of Physics and Energy, Shenzhen University, 518060, Shenzhen, China
6
Instituto de Física, Universidade Federal Fluminense, Niterói, 24210-340, Rio de Janeiro, Brazil
7
Laboratorio TANDAR, Comisión Nacional de Energía Atómica, Av. Gral. Paz 1499, BKNA1650, San Martín, Argentina
8
Institute of Nuclear Physics, Ulughbek, 100214, Tashkent, Uzbekistan
9
Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, School of Medicine and Engineering, Beihang University and Key Laboratory of Big Data-Based Precision Medicine (Beihang University), Ministry of Industry and Information Technology, Beihang University, 100191, Beijing, China
10
College of Physics, Jilin University, 130012, Changchun, China
11
China Institute of Atomic Energy, 102413, Beijing, China
12
Laboratori Nazionali di Legnaro, INFN, 35020, Legnaro, Italy
13
Irfu/CEA, Université de Paris-Saclay, 91190, Gif-sur-Yvette, France
14
X Lab, the Second Academy of CASIC, 100854, Beijing, China
15
School of Physics, Nankai University, 300071, Tianjin, China
Received:
17
December
2020
Accepted:
27
March
2021
Published online:
20
April
2021
Gamma-ray angular distributions in oriented Mo produced via the
Li+
Y reaction were studied in this work. The characteristic
rays in
Mo were measured by means of the GALILEO array, which is composed of 25 Compton-suppressed HPGe detectors arranged in a nearly 2
geometry. A detailed analysis of the spin-alignment attenuation factors (
) for different excited states in
Mo was performed, by analyzing the measured angular distribution coefficients of several pure-E2 transitions. The relationship between
and the spin was established in
Mo and the 244-keV transition between the 5
and 4
states resulted to have a E1 + M2 character with a mixing ratio (
) of
, consistent with shell model calculations.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021