Study of highly excited states in 16O with 3He+13C reactions at low energies

Ivano Lombardo; Daniele Dell’Aquila; Mariano Vigilante; Mualla Aytekin; Luigi Redigolo; Lucia Baldesi; Sandro Barlini; Alberto Camaiani; Giovanni Casini; Caterina Ciampi; Magda Cicerchia; Daniela Fabris; Catalin Frosin; Fabiana Gramegna; Tommaso Marchi; Antonio Ordine; Pietro Ottanelli; Gabriele Pasquali; Silvia Piantelli; Marco Russo; Andrea Stefanini; Simone Valdre; Giuseppe Verde

doi:10.1051/epjconf/202429207001

All issues

Volume 292 (2024)

EPJ Web Conf., 292 (2024) 07001

Abstract

Open Access

Issue		EPJ Web Conf. Volume 292, 2024 16^th Varenna Conference on Nuclear Reaction Mechanisms (NRM2023)


Article Number		07001
Number of page(s)		7
Section		Reaction Measurements
DOI		https://doi.org/10.1051/epjconf/202429207001
Published online		14 March 2024

EPJ Web of Conferences 292, 07001 (2024)
https://doi.org/10.1051/epjconf/202429207001

Study of highly excited states in ¹⁶O with ³He+¹³C reactions at low energies

Ivano Lombardo¹^,2^*, Daniele Dell’Aquila³^,4, Mariano Vigilante³^,4, Mualla Aytekin⁵, Luigi Redigolo¹^,2, Lucia Baldesi⁶^,7, Sandro Barlini⁶^,7, Alberto Camaiani⁶^,7, Giovanni Casini⁶^,7, Caterina Ciampi⁶^,7, Magda Cicerchia⁵^,8, Daniela Fabris⁹, Catalin Frosin⁶^,7, Fabiana Gramegna⁸, Tommaso Marchi⁸, Antonio Ordine⁴, Pietro Ottanelli⁶^,7, Gabriele Pasquali⁶^,7, Silvia Piantelli⁶^,7, Marco Russo¹^,2, Andrea Stefanini⁶^,7, Simone Valdre⁷ and Giuseppe Verde²

¹ Dip. di Fisica e Astronomia, Università di Catania, via S. Sofia 64, 95123, Catania, Italy
² INFN – Sezione di Catania, via S. Sofia 64, 95123, Catania, Italy
³ Dip. di Fisica, Università di Napoli Federico II, via Cintia, 80126, Napoli, Italy
⁴ INFN – Sezione di Napoli, via Cintia, 80126, Napoli, Italy
⁵ Dip. di Fisica e Astronomia, Univ. di Padova, via Marzolo, 30020, Padova, Italy
⁶ Dip. di Fisica e Astronomia, Univ. di Firenze, via G. Sansone, 50019, Sesto Fiorentino (FI), Italy
⁷ INFN – Sezione di Firenze, via G. Sansone, 50019, Sesto Fiorentino (FI), Italy
⁸ INFN – Laboratori Nazionali di Legnaro, via dell’Università, 35020, Legnaro (PD), Italy
⁹ INFN – Sezione di Padova, via Marzolo, 30020, Padova, Italy

^* e-mail: ivano.lombardo@ct.infn.it

Published online: 14 March 2024

Abstract

We report some preliminary experimental results on ¹³C(³He,α)¹²C reactions at low bombarding energies, in the range 1.4 – 2.2 MeV. The reconstruction of kinematic quantities in the final channel was performed by using a high-performance, low-threshold hodoscope, allowing for the particle identification even for low energy ejectiles. We succeeded in measuring detailed angular distributions, in absolute values, even for the transition leading to the emission of ¹²C in the Hoyle state, then resulting into 4 α particles in the final channel. The analysis of angular distributions as a function of energy suggests the occurrence of two low-spin resonant states, respectively with J^π = 1⁻ and 2⁺, at excitation energies of ≈ 24.1 and 24.5 MeV.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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