Degradation of single crystal diamond detectors in swift heavy ion beams

Bhattacharya, Ayan; Grotjohn, T.A.

doi:10.1016/j.diamond.2016.10.009

Cited by 4 publications

(2 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, several comprehensive studies have been carried out on radiation induced properties of single-crystal CVD diamond detectors using heavy ion beams. The radiation damage and the performance degradation for relativistic Au ions beams in fluence of 10 14 cm −2 [10], and for Sn and Zr ions beams in fluence of 10 13 cm −2 had been reported [6]. The reduce of signal height was observed in relevant literature and the reduce of the collected charge appeared only when the transient current was dominated by hole current when the diamond detector was irradiated by 45 MeV Si ions with a fluence of 10 8 cm −2 [11].…”

Section: Jinst 18 P11014mentioning

confidence: 99%

“…Investigation on the radiation hardness under high-counting rate conditions is necessary for applications in harsh environments such as those required for plasma diagnostics. For this purpose, future rare isotope facilities will provide particle beams of heavy ions with unprecedented intensities with particle rates of up to 10 8 particles per second [6].…”

Section: Jinst 18 P11014mentioning

confidence: 99%

See 1 more Smart Citation

Influence of high fluence heavy ion irradiation on the performance of single crystal diamond detectors

Wang,

Li,

et al. 2023

J. Inst.

View full text Add to dashboard Cite

Radiation detectors based on diamond are highly favored for particle physics research due to their superior radiation hardness. In this work, the performance of single crystal diamond detectors under high fluence heavy ion radiation has been investigated. After irradiation by Fe13+ and Xe20+ ion beams with a high particle fluence of 1.2 × 1015 cm-2, the properties of unirradiated and irradiated intrinsic single crystal chemical vapor deposition (CVD) diamond detectors are compared by means of the spectroscopic energy resolution, charge collection efficiency (CCE), mobility-lifetime (μτ) product and time response using a 241Am alpha (α) particle source. The experimental results of the unirradiated sample with respect to I-V dark current levels, showed an ohmic behaviour of the Al and Cr/Au contact, CCE of 100%, fast response with a rise time of 750 ps and a fall time of 600 ps as well as drift velocities of 6.67 × 104 m/s and 4.72 × 104 m/s for holes and electrons respectively. In the case of the irradiated samples, the CCE, μτ product and time response pulse amplitude of holes and electrons were all degraded, indicating that high density trappings for both kinds of carriers were created under the diamond crystal surface and the trapping probability of holes and electrons was equal, which was different from the previous reports in the literature where only higher trapping probability of holes were observed under heavy ions irradiation. In particular, the spectroscopic performance as well as μτ product of holes and electrons in Fe13+ irradiated sample decreased more than those in Xe20+ irradiated sample, which implied that the recombination of electrons and holes increased in Fe13+ irradiated sample with greater penetration depth than that in Xe20+ irradiated sample when radiation fluence was up to 1015 cm-2, despite the lower density of lattice vacancies in Fe13+ irradiated sample. Moreover, the rise time of holes was slightly different, but the drift velocity was basically the same as that of the unirradiated sample, and so was that of the electrons. Anyway, the presented results showed that the diamond detectors irradiated by heavy ions at a high fluence of 1015 cm-2 still retained their good spectroscopic and very fast time response properties.

show abstract

Section: Jinst 18 P11014mentioning

confidence: 99%

Section: Jinst 18 P11014mentioning

confidence: 99%