Calibration of the response function of CsI(Tl) scintillators to intermediate-energy heavy ions

doi:10.1016/0168-9002(92)90063-A

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Volume 321, Issue 3, 1 October 1992, Pages 529-534

https://doi.org/10.1016/0168-9002(92)90063-A Get rights and content

Abstract

The response function of 2-cm-thick CsI(Tl) scintillators with photodiode readouts were studied by directly exposing the detectors to beams of heavy ions (2≤Z≤36) with energy up to 25 MeV/u. The dependence of the light output on the energy (E) as well as on the atomic number and the mass of the ion is analyzed and discussed, and a parameterization of the light output as a function of Z and E is proposed.

References (24)

L.G. Moretto et al.
Prog. Part. Nucl. Phys.
(1988)
W.L. Kehoe et al.
Nucl. Instr. and Meth.
(1992)
D.G. Sarantites et al.
Nucl. Instr. and Meth.
(1988)
D. Drain
Nucl. Instr. and Meth.
(1989)
R.T. de Souza et al.
Nucl. Instr. and Meth.
(1990)
G. Viesti et al.
Nucl. Instr. and Meth.
(1986)
E. Valtonen et al.
Nucl. Instr. and Meth.
(1990)
D.W. Stracener et al.
Nucl. Instr. and Meth.
(1990)
C.J.W. Twenhöfel et al.
Nucl. Instr. and Meth.
(1990)
M.A. McMahan et al.
Nucl. Instr. and Meth.
(1986)

D.J. Clark et al.

Nucl. Instr. and Meth.

(1990)

R. Bassini et al.

Nucl. Instr. and Meth.

(1991)

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¹: Permanent address: Istituto Nazionale Fisica Nucleare, Via Amendola 173, 70126 Bari, Italy.

²: Permanent address: Skyline College, San Bruno, CA 94066, USA.

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Calibration of the response function of CsI(Tl) scintillators to intermediate-energy heavy ions

Abstract

Prog. Part. Nucl. Phys.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.

Nucl. Instr. and Meth.