Lanthanum halide scintillation crystals represent the state of the art of the scintillators technology for gamma ray spectroscopy. They feature a short decaying time (< 30 ns), high light yield, good detection efficiency and an optimal energy resolution (< 2.9% at 662 keV). Lanthanum halides also present an intense intrinsic background caused by the radioactive decay of 138La and 227Ac contaminations, which cover all the lower energies up to 3 MeV.Despite being a limitation in low counting rate experiments, this intrinsic background can be exploited to perform energy calibration of the pulse height spectra, refraining from the employment of dedicated external sources. The intense electron capture peak of 138La at 1471 keV, which is the most relevant feature for this purpose, has been deeply characterized in literature in many aspects.In this work, a detailed analysis of the lanthanum bromide intrinsic background was performed on several scintillation crystals, unveiling a feature with an average energy of 1515 keV not yet described in the current literature.

Marcer, G., Rebai, M., Dal Molin, A., Putignano, O., Rigamonti, D., Camera, F., et al. (2023). Detailed analysis of a previously uninvestigated feature in lanthanum bromide scintillation crystals intrinsic background. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 1047(February 2023) [10.1016/j.nima.2022.167796].

Detailed analysis of a previously uninvestigated feature in lanthanum bromide scintillation crystals intrinsic background

Marcer, G.
Primo
;
Rebai, M.;Dal Molin, Andrea;Putignano, O.;Rigamonti, D.;Tardocchi, M.
Ultimo
2023

Abstract

Lanthanum halide scintillation crystals represent the state of the art of the scintillators technology for gamma ray spectroscopy. They feature a short decaying time (< 30 ns), high light yield, good detection efficiency and an optimal energy resolution (< 2.9% at 662 keV). Lanthanum halides also present an intense intrinsic background caused by the radioactive decay of 138La and 227Ac contaminations, which cover all the lower energies up to 3 MeV.Despite being a limitation in low counting rate experiments, this intrinsic background can be exploited to perform energy calibration of the pulse height spectra, refraining from the employment of dedicated external sources. The intense electron capture peak of 138La at 1471 keV, which is the most relevant feature for this purpose, has been deeply characterized in literature in many aspects.In this work, a detailed analysis of the lanthanum bromide intrinsic background was performed on several scintillation crystals, unveiling a feature with an average energy of 1515 keV not yet described in the current literature.
Articolo in rivista - Articolo scientifico
Lanthanum bromide, Gamma ray spectrometer; Detector; Intrinsic activity; Photodetection
English
15-nov-2022
2023
1047
February 2023
167796
reserved
Marcer, G., Rebai, M., Dal Molin, A., Putignano, O., Rigamonti, D., Camera, F., et al. (2023). Detailed analysis of a previously uninvestigated feature in lanthanum bromide scintillation crystals intrinsic background. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 1047(February 2023) [10.1016/j.nima.2022.167796].
File in questo prodotto:
File Dimensione Formato  
Marcer-2023-NIM-VoR.pdf

Solo gestori archivio

Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Licenza: Tutti i diritti riservati
Dimensione 859.92 kB
Formato Adobe PDF
859.92 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/518980
Citazioni
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
Social impact