Charge transport properties of CdMnTe radiation detectors

R. Rafiei; D. Boardman; M. I. Reinhard; A. Sarbutt; K. Kim; G. C. Watt; S. Uxa; D. A. Prokopovich; E. Belas; A. E. Bolotnikov; R. B. James

doi:10.1051/epjconf/20123502005

Charge transport properties of CdMnTe radiation detectors

R. Rafiei, D. Boardman, M. I. Reinhard, A. Sarbutt, K. Kim, G. C. Watt, S. Uxa, D. A. Prokopovich, E. Belas, A. E. Bolotnikov, R. B. James

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

Growth, fabrication and characterization of indium-doped cadmium manganese telluride (CdMnTe) radiation detectors have been described. Alpha-particle spectroscopy measurements and time resolved current transient measurements have yielded an average charge collection efficiency approaching 100 %. Spatially resolved charge collection efficiency maps have been produced for a range of detector bias voltages. Inhomo-geneities in the charge transport of the CdMnTe crystals have been associated with chains of tellurium inclusions within the detector bulk. Further, it has been shown that the role of tellurium inclusions in degrading charge collection is reduced with increasing values of bias voltage. The electron drift velocity was calculated from the rise time distribution of the preamplifier output pulses at each measured bias. From the dependence of drift velocity on applied electric field the electron mobility was found to be μ_n = (718 ± 55) cm²/Vs at room temperature.

Original language	English
Article number	02005
Journal	EPJ Web of Conferences
Volume	35
DOIs	https://doi.org/10.1051/epjconf/20123502005
Publication status	Published - 2012
Externally published	Yes
Event	1st Heavy Ion Accelerator Symposium on Fundamental and Applied Science, HIAS 2012 - Canberra, ACT, Australia Duration: 2012 Apr 11 → 2012 Apr 13

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1051/epjconf/20123502005

Cite this

@article{15710bb5f9b849378a56a8ca8a601ef8,

title = "Charge transport properties of CdMnTe radiation detectors",

abstract = "Growth, fabrication and characterization of indium-doped cadmium manganese telluride (CdMnTe) radiation detectors have been described. Alpha-particle spectroscopy measurements and time resolved current transient measurements have yielded an average charge collection efficiency approaching 100 %. Spatially resolved charge collection efficiency maps have been produced for a range of detector bias voltages. Inhomo-geneities in the charge transport of the CdMnTe crystals have been associated with chains of tellurium inclusions within the detector bulk. Further, it has been shown that the role of tellurium inclusions in degrading charge collection is reduced with increasing values of bias voltage. The electron drift velocity was calculated from the rise time distribution of the preamplifier output pulses at each measured bias. From the dependence of drift velocity on applied electric field the electron mobility was found to be μn = (718 ± 55) cm2/Vs at room temperature.",

author = "R. Rafiei and D. Boardman and Reinhard, {M. I.} and A. Sarbutt and K. Kim and Watt, {G. C.} and S. Uxa and Prokopovich, {D. A.} and E. Belas and Bolotnikov, {A. E.} and James, {R. B.}",

year = "2012",

doi = "10.1051/epjconf/20123502005",

language = "English",

volume = "35",

journal = "EPJ Web of Conferences",

issn = "2101-6275",

publisher = "EDP Sciences",

note = "1st Heavy Ion Accelerator Symposium on Fundamental and Applied Science, HIAS 2012 ; Conference date: 11-04-2012 Through 13-04-2012",

}

TY - JOUR

T1 - Charge transport properties of CdMnTe radiation detectors

AU - Rafiei, R.

AU - Boardman, D.

AU - Reinhard, M. I.

AU - Sarbutt, A.

AU - Kim, K.

AU - Watt, G. C.

AU - Uxa, S.

AU - Prokopovich, D. A.

AU - Belas, E.

AU - Bolotnikov, A. E.

AU - James, R. B.

PY - 2012

Y1 - 2012

N2 - Growth, fabrication and characterization of indium-doped cadmium manganese telluride (CdMnTe) radiation detectors have been described. Alpha-particle spectroscopy measurements and time resolved current transient measurements have yielded an average charge collection efficiency approaching 100 %. Spatially resolved charge collection efficiency maps have been produced for a range of detector bias voltages. Inhomo-geneities in the charge transport of the CdMnTe crystals have been associated with chains of tellurium inclusions within the detector bulk. Further, it has been shown that the role of tellurium inclusions in degrading charge collection is reduced with increasing values of bias voltage. The electron drift velocity was calculated from the rise time distribution of the preamplifier output pulses at each measured bias. From the dependence of drift velocity on applied electric field the electron mobility was found to be μn = (718 ± 55) cm2/Vs at room temperature.

AB - Growth, fabrication and characterization of indium-doped cadmium manganese telluride (CdMnTe) radiation detectors have been described. Alpha-particle spectroscopy measurements and time resolved current transient measurements have yielded an average charge collection efficiency approaching 100 %. Spatially resolved charge collection efficiency maps have been produced for a range of detector bias voltages. Inhomo-geneities in the charge transport of the CdMnTe crystals have been associated with chains of tellurium inclusions within the detector bulk. Further, it has been shown that the role of tellurium inclusions in degrading charge collection is reduced with increasing values of bias voltage. The electron drift velocity was calculated from the rise time distribution of the preamplifier output pulses at each measured bias. From the dependence of drift velocity on applied electric field the electron mobility was found to be μn = (718 ± 55) cm2/Vs at room temperature.

UR - http://www.scopus.com/inward/record.url?scp=84876287136&partnerID=8YFLogxK

U2 - 10.1051/epjconf/20123502005

DO - 10.1051/epjconf/20123502005

M3 - Conference article

AN - SCOPUS:84876287136

SN - 2101-6275

VL - 35

JO - EPJ Web of Conferences

JF - EPJ Web of Conferences

M1 - 02005

T2 - 1st Heavy Ion Accelerator Symposium on Fundamental and Applied Science, HIAS 2012

Y2 - 11 April 2012 through 13 April 2012

ER -

Charge transport properties of CdMnTe radiation detectors

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this