Speaker
Description
Extreme Light Infrastructure – Nuclear Physics, Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, 30 Reactorului Street, 077125 Magurele, Romania
In the period 2022-2025, four experimental campaigns were carried out at the 9 MW tandem accelerator of IFIN-HH using the large-volume LaBr$_3$:Ce and CeBr$_3$ detectors of the ELIGANT-GN array, which were placed in the anti-Compton shields of the ROSPHERE [1]. As a result, a highly efficient spectrometer, ELIFANT, was assembled for the detection of high-energy gamma rays. The ELIFANT experimental program included measurements of weak γ-ray decay branching ratios in $^{10}$B [2-6], the precise radiative decay of the Hoyle state in $^{12}$C [7,8], the search for extra PDR strength at high nuclear temperature in $^{56,60,62}$Ni, the so-called HOT-PDR mode [9,10], isospin mixing in the $^{72}$Kr via GDR decay [11], and measurements of γ-strength functions in $^{112,114}$Sn and level densities of $^{128}$Te in the PDR region and the nuclear quasi-continuum [12,13].
This program will be extended to studies of the structure of the PDR in different nuclei at the N = 28 neutron shells, and the Z = 28 proton shell in (d,pγ) reactions using the ELIFANT array, and their comparison with excitations using other probes.
In this contribution, I will describe the performance of the spectrometer, and some selected results from the experimental campaigns will be presented.
References:
[1] S. Aogaki, et al., Nucl. Instrum. Methods Phys. Res. A, 1056, 168628 (2023).
[2] A. Kuşoğlu, D. L. Balabanski, Quantum Beam Sci., 7(3), 28 (2023)
[3] A. Kuşoğlu, et al., Phys. Rev. Lett. 133, 072502 (2024)
[4] A. Kuşoğlu et al., Nuovo Cim. C, 47, 47 (2024)
[5] A. Kuşoğlu, Sci. Bull. 69, 3303-3304 (2024)
[6] A. Kuşoğlu et al., EPJ Web of Conf. 311, 00020 (2024)
[7] K. Sakanashi et al., EPJ Web of Conf. 306, 01047 (2024)
[8] K. Sakanashi et al., Phys. Lett. B, 139893 (2025)
[9] O. Wieland et al., Nuovo Cim. C, 47, 24 (2024)
[10] O. Wieland et al., Acta Phys. Pol. B Proc. Suppl. 18, 2-A33 (2025)
[11] A. Giaz et al., Phys. Lett. B 868, 139653 (2025)
[12] P. A. Söderström et al., Phys. Rev. C, 112, 024327 (2025)
[13] P. A. Söderström et al., Phys. Scr. 100, 075301 (2025)
Acknowledgment: This work was supported by the Romanian Ministry of Research and Innovation under research contract PN 23 21 01 06, and the ELI-RO program funded by the Institute of Atomic Physics, Măgurele, Romania, contract numbers ELI-RO/RDI/2024-002 CHIPHERS and ELI-RO/RDI/2024-007 ELITE.