Systematic study of the normal and pumped state of high efficiency diamond particle detectors grown by chemical vapor deposition

Marco Marinelli, E. Milani, A. Paoletti, A. Tucciarone, G. Verona Rinati, M. Angelone, M. Pillon

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

The efficiency and charge collection distance (CCD) of nuclear particle detectors based on high quality diamond films grown by chemical vapor deposition (CVD) have been systematically studied as a function of the methane content in the growth gas mixture and for varying film thickness. The effects of preirradiation with β particles (pumping) have been thoroughly studied. The results fully support a recently proposed model [Marinelli et al., Appl. Phys. Lett. 75, 3216 (1999)] discussing the role of in-grain defects and grain boundaries in determining the charge collection spectra of CVD diamond films both in the normal and in the pumped state. The model allows us to quantitatively explain the dependence of CCD and efficiency on film thickness, giving a microscopic picture of the effects of preirradiation with ionizing radiation in CVD diamond films. The highest average CCD obtained is 145 μm in a 160 μm thick detector (corresponding to about 50% average efficiency), while the maximum value (about 70% efficiency) is close to 370 μm. In addition, CCD is shown to be higher than film thickness and to monotonically increase with thickness, indicating margins for further improvements. © 2001 American Institute of Physics.
Original languageEnglish
Pages (from-to)1430 - 1435
Number of pages6
JournalJournal of Applied Physics
Volume89
Issue number2
DOIs
Publication statusPublished - 15 Jan 2001
Externally publishedYes

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Marinelli, M., Milani, E., Paoletti, A., Tucciarone, A., Verona Rinati, G., Angelone, M., & Pillon, M. (2001). Systematic study of the normal and pumped state of high efficiency diamond particle detectors grown by chemical vapor deposition. Journal of Applied Physics, 89(2), 1430 - 1435. https://doi.org/10.1063/1.1332805