Clustering in ¹³C

¹ Institut Ruđer Bošković, Zagreb, Croatia
² Instituto de Física, Universidad Nacional Autónoma de México, México City, México
³ School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom
⁴ Dipartimento di Fisica ”Ettore Pancini”, Università degli Studi di Napoli “Federico II”, Napoli, Italy
⁵ INFN Sezione di Napoli, Naples, Italy
⁶ Departamento de Ingeniería Eléctrica y Centro de Estudios Avanzados en Física, Matemáticas y Computación (CEAFMC), Universidad de Huelva, Huelva, Spain
⁷ Departamento FAMN, Universidad de Sevilla, Sevilla, Spain
⁸ INFN Laboratori Nazionali del Sud, Catania, Italy
⁹ INFN Laboratori Nazionali di Legnaro, Legnaro, Italy
¹⁰ Department of Physics and Astronomy, Aarhus University, Aarhus, Denmark
¹¹ Departamento de Ciencias Integradas, Universidad de Huelva, Huelva, Spain
¹² Department of Engineering and Mathematics, Sheffield Hallam University, Sheffield, United Kingdom
¹³ Department of Physics, University of Split, Faculty of Science, Split, Croatia

^* e-mail: luka.palada@irb.hr

Published online: 28 October 2024

Abstract

Measurement was conducted at the INFN-LNL, employing a Tandem accelerator to achieve a 95 MeV ¹⁴N beam focused on ¹⁰B target (201 µg/cm²) with the aim to explore the cluster structures of light carbon isotopes. The main focus of this report will be on the ¹³C nucleus. Data were collected with a six-telescope detection system that allowed for the observation of many-body exit channels. Here are presented some results of the data analysis for the excited states of ¹³C from reactions with two and three products in the exit channel. In the ¹⁰B(¹⁴N,¹¹C)¹³C reaction, well-defined peaks were identified at 2.0, 3.7, 5.7, 7.4, 9.4, 11.7, 13.9, and 15.9 MeV. The states from ground state to 5.7 MeV are well understood and are used to correct the spectrum, while more states can contribute to the states at higher excitations and further investigation is needed. In the ¹⁰B(¹⁴N,¹¹C⁹Be)⁴He channel, states were identified at 13.1, 13.9, 15.6, and 18.5 MeV. The experimental results show consistency with the previously published data, supporting theoretical models of clustering and molecular-like structures in ¹³C. Further analysis of other reaction channels and states will be presented in future publications, aiming to enhance our understanding of multi-center clustering in carbon isotopes.