Spectroscopic properties of large-volume virtual Frisch-grid CdMnTe detectors

Kihyun Kim, Chansun Park, Pilsu Kim, Shinhaeng Cho, Jinseo Lee, T. K. Hong, A. Hossain, A. E. Bolotnikov, R. B. James

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

CdMnTe(CMT) is a promising alternative material for use as a room-temperature radiation detector. Frisch-grid detectors have a simple configuration and outstanding spectral performance compared with other single-carrier collection techniques. The energy resolution of large-volume virtual Frisch-grid CMT detectors was tested by using several isotopes such as 57Co, 22 Na, 133Ba, and 137Cs together or separately. Energy resolutions of 6.7% and 2.1% were obtained for 122-keV 57Co and 662-keV 137Cs gamma rays, respectively, without using any additional signal processing techniques. Also, a 12-mm-thick CMT detector detected the 511-keV and 1.277-MeV gamma peaks of 22Na with values of the full width at half maximum (FWHM) of 2.7% and 1.5%, respectively. In addition, multiple low- and high-energy gamma peaks of 133Ba were well separated. The mobilitylifetime product calculated from the shift of the 662-keV photo-peak vs. bias by using Hecht’s equation was 7 × 10 −3 cm2/V. These results show the possibility of using CMT detectors in response to various requirements for gamma-ray detection at room-temperature.

Original languageEnglish
Pages (from-to)1761-1765
Number of pages5
JournalJournal of the Korean Physical Society
Volume66
Issue number11
DOIs
Publication statusPublished - 2015 Jun 20

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grids
detectors
gamma rays
photopeak
energy
radiation detectors
room temperature
signal processing
isotopes
requirements
shift
products
configurations

Keywords

  • CdMnTe
  • CdZnTe
  • Frisch-grid
  • Mobility-lifetime product
  • Traveling heater method

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Spectroscopic properties of large-volume virtual Frisch-grid CdMnTe detectors. / Kim, Kihyun; Park, Chansun; Kim, Pilsu; Cho, Shinhaeng; Lee, Jinseo; Hong, T. K.; Hossain, A.; Bolotnikov, A. E.; James, R. B.

In: Journal of the Korean Physical Society, Vol. 66, No. 11, 20.06.2015, p. 1761-1765.

Research output: Contribution to journalArticle

Kim, K, Park, C, Kim, P, Cho, S, Lee, J, Hong, TK, Hossain, A, Bolotnikov, AE & James, RB 2015, 'Spectroscopic properties of large-volume virtual Frisch-grid CdMnTe detectors', Journal of the Korean Physical Society, vol. 66, no. 11, pp. 1761-1765. https://doi.org/10.3938/jkps.66.1761
Kim, Kihyun ; Park, Chansun ; Kim, Pilsu ; Cho, Shinhaeng ; Lee, Jinseo ; Hong, T. K. ; Hossain, A. ; Bolotnikov, A. E. ; James, R. B. / Spectroscopic properties of large-volume virtual Frisch-grid CdMnTe detectors. In: Journal of the Korean Physical Society. 2015 ; Vol. 66, No. 11. pp. 1761-1765.
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