Analysis of alpha-emitting isotopes in an inorganic scintillator

Barton, J. C.; Edgington, J.A.

doi:10.1016/s0168-9002(99)01086-4

Cited by 25 publications

(7 citation statements)

References 9 publications

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“…3. The obtained α peaks (the α nature of events was confirmed by the pulse-shape analysis described in Section 3.2.4) as well as the distributions of the time intervals between events, are in a good agreement with those expected for the α decays of the 224 Ra → 220 Rn → 216 Po → 212 Pb chain.…”

Section: Time-amplitude Analysissupporting

confidence: 78%

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Radioactive contamination of scintillators

Danevich

Tretyak

2018

Int. J. Mod. Phys. A

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Low counting experiments (search for double β decay and dark matter particles, measurements of neutrino fluxes from different sources, search for hypothetical nuclear and subnuclear processes, low background α, β, γ spectrometry) require extremely low background of a detector. Scintillators are widely used to search for rare events both as conventional scintillation detectors and as cryogenic scintillating bolometers. Radioactive contamination of a scintillation material plays a key role to reach low level of background. Origin and nature of radioactive contamination of scintillators, experimental methods and results are reviewed. A programme to develop radiopure crystal scintillators for low counting experiments is discussed briefly.

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Section: Time-amplitude Analysissupporting

confidence: 78%

“…Data on the energy and arrival time of events can be used to select fast decay chains from the 232 Th, 235 U and 238 U families. The method of time-amplitude analysis is described in detail in [223,224,44,45,208]. For instance, the following sequence of α decays from the 232 Th family can be selected:…”

Section: Time-amplitude Analysismentioning

confidence: 99%

Radioactive contamination of scintillators

Danevich

Tretyak

2018

Int. J. Mod. Phys. A

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“…The growth of the α/β ratio with α particles energy has been earlier observed for cadmium tungstate[6] and other scintillators[14,16,17].…”

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confidence: 71%

α activity of natural tungsten isotopes

et al. 2003

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“…in Ref. [22][23][24]) was used to select the events of the following decay sub-chain of the 232 Th family: 224 Ra (Q α = 5789 keV; T 1/2 = 3.66 d) → 220 Rn (Q α = 6405 keV; T 1/2 = 55.6 s) → 216 Po (Q α = 6906 keV; T 1/2 = 0.145 s) → 212 Pb.…”

Section: Time-amplitude Analysis Of 228mentioning

confidence: 99%

Search for $α$ decay of naturally occurring Hf-nuclides using a Cs$_2$HfCl$_6$ scintillator

Caracciolo,

Nagorny,

Belli

et al. 2020

Preprint

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Residual radioactive contaminants of a caesium hafnium chloride (Cs 2 HfCl 6 ) crystal scintillator have been measured in a low background setup at the Gran Sasso National Laboratory of the INFN, Italy. The total alpha activity of the detector is at the level of 7.8(3) mBq/kg. The results of direct studies of the α decay of naturally occurring Hf isotopes that have been performed using the "source=detector" approach are presented. In 2848 h of data taking, the α decay of 174 Hf was observed with T 1/2 = (7.0 ± 1.2) × 10 16 y.Keywords: rare alpha decay; 174 Hf; 176 Hf; 177 Hf; 178 Hf; 179 Hf; 180 Hf; crystal scintillator; Cs 2 HfCl 6 ; HP-Ge γ spectrometer; source = detector approach; low background experiment; hafnium.

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Analysis of alpha-emitting isotopes in an inorganic scintillator

Cited by 25 publications

References 9 publications

Radioactive contamination of scintillators

Radioactive contamination of scintillators

α activity of natural tungsten isotopes

Search for $α$ decay of naturally occurring Hf-nuclides using a Cs$_2$HfCl$_6$ scintillator

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