Radiation detector made of a diamond single crystal grown by a chemical vapor deposition method

Kaneko, Junichi; Tanaka, T.; Imai, T.; Tanimura, Yoshihiko; Katagiri, Masaki; Nishitani, T.; Takeuchi, Hiroshi; Sawamura, Teruko; Iida, Toshiyuki

doi:10.1016/s0168-9002(03)01048-9

Cited by 54 publications

(29 citation statements)

References 11 publications

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“…2 was obtained. Moreover, energy resolution of 6% at the peak caused by the 12 C͑n , ␣ 0 ͒ 9 Be reactions was achieved; it was the best result for synthetic diamond radiation detectors.…”

Section: B Experimental Setup and Measurement Electronicsmentioning

confidence: 94%

“…In Fig. 2(a), basic structure caused by the 12 C͑n , nЈ͒ 12 C, 12 C͑n , nЈ͒ 12 C * , 12 C͑n , nЈ͒3␣ and 12 C͑n , ␣ 0 ͒ 9 Be reactions 15 was clearly observed. In contrast, the structure became dull with increase of measurement time as shown in Fig.…”

Section: B Experimental Setup and Measurement Electronicsmentioning

confidence: 95%

“…The detectors had energy resolution of 2.6% and 2.8% for 5.5 MeV ␣ particles. 13 These values were far from higher energy resolution of 0.4% achieved by radiation detectors made of the HP/HT-type IIa single crystal diamond 12 and the CVD single crystal diamond. 14 It had already been known that the quality of the nondoped diamond layers was not very high; it was obvious from their cathode luminescence spectra in which the strong band A luminescence around 420 nm was observed with the free exciton recombination luminescence at 235 nm, indicating high quality.…”

Section: Detector and Experimental Setupmentioning

confidence: 98%

“…Moreover, a diamond radiation detector can be applied to 14 MeV neutron energy spectroscopy using the 12 C͑n , ␣ 0 ͒ 9 Be reactions. This method corresponds to neutron energy spectroscopy using the 28 Si͑n , ␣͒ 25 Mg and 28 Si͑n , p͒ 28 Al reactions in a silicon surface barrier detector.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, the application of chemical vapor deposition (CVD) diamond single crystal was carried out successfully. 12 …”

Section: Introductionmentioning

confidence: 99%

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Response function measurement of layered type CVD single crystal diamond radiation detectors for 14 MeV neutrons

Kaneko

Teraji

Hirai

et al. 2004

Review of Scientific Instruments

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Response function measurement of layered-type chemical vapor deposition single crystal diamond radiation detectors for 14 MeV neutrons was carried out. The detector had a layered structure that was composed of a boron-doped diamond layer of 0.5 m in thickness and a nondoped diamond layer of 20 m on an inexpensive high pressure and high temperature-type Ib diamond substrate. The detector had energy resolution of 2.6% for 5.5 MeV ␣ particles. This experiment was mainly carried out in order to understand the present status of the detector as a 14 MeV neutron spectrometer and an extent of charge trapping. As result, a peak caused by the 12 C͑n , ␣ 0 ͒ 9 Be reactions was clearly observed; the best energy resolution of 6% as for a synthetic diamond radiation detector was achieved. Detection efficiency was 3.2ϫ 10 −7 counts/unit neutron fluence. However, taking the energy resolution for ␣ particles, etc., into account, the energy resolution for 14 MeV neutrons was not so high. Further improvement based on better crystal growth is indispensable.

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Section: B Experimental Setup and Measurement Electronicsmentioning

confidence: 94%

Section: B Experimental Setup and Measurement Electronicsmentioning

confidence: 95%

Section: Detector and Experimental Setupmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

“…At the same time, the application of chemical vapor deposition (CVD) diamond single crystal was carried out successfully. 12 …”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Response function measurement of layered type CVD single crystal diamond radiation detectors for 14 MeV neutrons

Kaneko

Teraji

Hirai

et al. 2004

Review of Scientific Instruments

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Next‐generation solid‐state detectors for charged particle spectroscopy

et al. 2016

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The performance of silicon avalanche photodiodes (APDs) and single crystal chemical vapor deposit diamond detectors (DDs) is reviewed in comparison with conventional silicon‐based solid‐state detectors (SSDs) from the perspective of space plasma applications. Although the low‐energy threshold and the energy resolution are equivalent to SSDs, DDs offer a high radiation tolerance and very low leakage currents due to a wider band gap than silicon. In addition, DDs can operate at higher temperatures, are insensitive to light (>226 nm), and are capable of timing analysis due to the higher intrinsic carrier mobility. APDs also offer several advantageous features. Specifically, APDs have a lower energy threshold (<0.9 keV) and a higher energy resolution (<0.7 keV full width at half maximum at room temperature), along with a linear response due to a strong electric field causing signal amplifications within the detector. Therefore, APDs can be used to detect lower energy particles, covering a larger portion of the energy spectrum than conventional SSDs. Further, the strong internal electric field gives them a subnanosecond response time by the charge mobility saturation, allowing them to make precise timing measurements of ions. These novel detector techniques can be potentially applied to improve the measurements of suprathermal particles, whose energies lie between typical ranges of conventional sensors for low‐energy plasmas and energetic particles. Although the origin and evolution of the suprathermal particles are the key to understanding the acceleration and heating processes in space plasma, they are not well understood due to the technical difficulties of making the measurement.

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Development of single‐crystal CVD‐diamond detectors for spectroscopy and timing

Pomorski¹,

Berdermann²,

Caragheorgheopol

et al. 2006

Physica Status Solidi (a)

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Charge‐transport parameters measured for several single‐crystal CVD‐diamond films are discussed as well as the consequences for the energy‐ and the time resolution of charged‐particle detectors made of these samples. Applying a transient‐current technique, where 241Am α‐particles are used for e–h pair creation, low‐field electron mobility values varying in the range 1300 < µ 0–e [cm2/Vs] < 3100 are obtained, and a common saturation velocity around v sat–e ≈ 1.9 × 107 [cm/s]. Hole data show impressive uniformity with µ 0–h ≈ 2330 [cm2/Vs] and v sat–h ≈ 1.4 × 107 [cm/s]. At detector operation bias (0.3 V/μm < E D < 3 V/μm) the holes drift systematically faster than the electrons. The lifetime of the charge carriers in best samples amounts to τ h ≈ 1 µs for holes and to τ e ∼ 320 ns for electrons. Comparable to the energy resolution of commercial silicon detectors, a ΔE = 17 keV (FWHM) is measured for 5.5 MeV α‐particles and ΔE /E ∼ 1% for heavy ions. Tests of single‐ and polycrystalline detectors with relativistic 27Al ions of 2 AGeV reveal the same intrinsic time resolution of σ (Δt) = 28 ps indicating limitations due to electronic noise. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Radiation detector made of a diamond single crystal grown by a chemical vapor deposition method

Cited by 54 publications

References 11 publications

Response function measurement of layered type CVD single crystal diamond radiation detectors for 14 MeV neutrons

Response function measurement of layered type CVD single crystal diamond radiation detectors for 14 MeV neutrons

Next‐generation solid‐state detectors for charged particle spectroscopy

Development of single‐crystal CVD‐diamond detectors for spectroscopy and timing

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