Application of a Phoswich to Particle Identification

Bodansky, David; Eccles, S.F.

doi:10.1063/1.1715908

Cited by 20 publications

(2 citation statements)

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“…On the other side, some drawbacks in using these crystal are found in the fact that their photon emission is only almost 10% with respect to the light emission of NaI(Tl) crystals and that, normally, after the production process they contain some Ra impurities, that are at the origin of a typical "background", constituted mainly by a group of alpha-particles (with energies ranging from 4.9 to 7.8 MeV), and in minor extent by -rays and electrons [4], [10]. An enhancement in the application of to medium energy physics arrived with the possibility to detect at the same time light charged particle (isotopically separated) and heavy ions (charge separation only), by just putting at the surface of the crystal a typical fast plastic scintillator (NE102A) [11], [12] exploiting the advantages of the phoswich technique [13], [14] and of the high time resolution [1]. The Argos forward wall, constituted by about 60 of such phoswiches, has already been successfully used for studying nuclear reaction mechanisms in experiments at intermediate energies [15], [16].…”

Section: Introductionmentioning

confidence: 99%

On-Beam Digital Pulse Shape Acquisition From NE102A-${\rm BaF}_{2}$ Phoswich Detector

Amorini

Filippo

Guazzoni

et al. 2009

IEEE Trans. Nucl. Sci.

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The use of NE102A-BaF 2 phoswich detector drastically improves the particle identification with respect to BaF 2 crystals. To better exploit the possibility of light ion discrimination we have applied digital signal processing to the signals, on-beam collected with NE102A-BaF 2 phoswich. We present the results obtained for the heavy ion charge identification (up to Z = 50) and light particle mass identification, using digital pulse shape acquisition and a 12-bit, 2 GSample/s sampling analog to digital converter. The results concerning the response of BaF 2 -plastic phoswich to the reaction products issued at forward angles in the collision of 35.1 MeV/u 124 Sn beam on 64 Ni target have been obtained at the Superconducting Cyclotron of the Laboratori Nazionali del Sud in Catania.

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Section: Introductionmentioning

confidence: 99%

On-Beam Digital Pulse Shape Acquisition From NE102A-${\rm BaF}_{2}$ Phoswich Detector

Amorini

Filippo

Guazzoni

et al. 2009

IEEE Trans. Nucl. Sci.

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“…The basic material of a plastic scintillator is a plastic that contains some form of aromatic hydrocarbon such as polyvinyltoluene (PVT) or polystyrene (Bondansky & Eccles 1957). Generally, a plastic scintillator is produced by doping *Author for correspondence (hidehito@nirs.go.jp).…”

Section: Introductionmentioning

confidence: 99%

Radiation measurements with heat-proof polyethylene terephthalate bottles

Nakamura¹,

Kitamura²,

Hazama

2010

Proc. R. Soc. A.

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This study demonstrates that the energy resolution of a newly developed 100 per cent pure polyvinyltoluene (PVT) plate allows its use as a base material for a plastic scintillator. The energy resolution, which is a key element for high-performance radiation detectors, was DE/E = 8.41 ± 0.07% (full width at half maximum (FWHM)) for 976 keV K-line conversion electrons from a 207 Bi source. On the basis of results from 207 Bi and 137 Cs sources, the observed energy resolution of the PVT plate, DE/E = 8.2/E 1/2 % (FWHM), was slightly better than that of a typical plastic scintillator (BC-408), DE/E = 8.7/E 1/2 % (FWHM), with E in units of MeV. These results prompted us to search for other new base materials for plastic scintillators. In this study, we examined polyethylene terephthalate (PET) bottles, a common source of domestic plastic waste. We demonstrated that a lump of heat-proof PET bottles is fluorescent; moreover, there is excellent compatibility of the fluorescence with the quantum efficiency of typical photomultiplier tubes. This inexpensive source of plastic appears suitable for radiation measurements and as a base material for plastic scintillators. Future studies on the radiation response of plastics should lead to the development of higher performance and more eco-friendly radiation detectors.

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