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Journal Articles

Charge-collection efficiency of single-crystal CVD diamond detector for low-energy charged particles with energies ranging from 100 keV to 2 MeV

Sato, Yuki; Murakami, Hiroyuki*; Shimaoka, Takehiro*; Tsubota, Masakatsu*; Kaneko, Junichi*

Nuclear Instruments and Methods in Physics Research A, 834, p.218 - 222, 2016/10

 Times Cited Count:1 Percentile:83.2(Instruments & Instrumentation)

Journal Articles

Fano factor evaluation of diamond detectors for alpha particles

Shimaoka, Takehiro*; Kaneko, Junichi*; Sato, Yuki; Tsubota, Masakatsu*; Shimmyo, Hiroaki*; Chayahara, Akiyoshi*; Watanabe, Hideyuki*; Umezawa, Hitoshi*; Mokuno, Yoshiaki*

Physica Status Solidi (A), 213(10), p.2629 - 2633, 2016/10

 Times Cited Count:2 Percentile:83.48(Materials Science, Multidisciplinary)

Journal Articles

Charge-collection efficiency and long-term stability of single-crystal CVD diamond detector under different carrier-drift conditions

Sato, Yuki; Murakami, Hiroyuki*; Shimaoka, Takehiro*; Tsubota, Masakatsu*; Kaneko, Junichi*

Japanese Journal of Applied Physics, 55(4), p.046401_1 - 046401_5, 2016/04

 Times Cited Count:1 Percentile:92.08(Physics, Applied)

We investigated the performance of a charged particle detector fabricated using single-crystal diamond grown by chemical vapor deposition. The detector was able to identify four different $$^{241}$$Am $$alpha$$-particle energies (5.389, 5.443, 5.486, and 5.545 MeV) because of its superior intrinsic energy resolution of $$sim$$0.4% (full width at half maximum). The charge collection efficiency inside the diamond crystal was $$sim$$98% for both electrons and holes. The diamond detector also exhibited no significant degradation in terms of pulse height spectra and energy resolution during operation for more than 100 h in the case of mainly electron drift inside the diamond crystal. In contrast, the shapes of the pulse height spectra measured under hole drift condition deteriorated due to the polarization phenomenon.

Journal Articles

Application of diamond to fusion plasma diagnostic

Kusama, Yoshinori; Ishikawa, Masao

NEW DIAMOND, 21(3), p.24 - 25, 2005/07

no abstracts in English

Journal Articles

Charge exchange neutral particle measurements with natural diamond detector under the deuterium-deuterium neutron field on JT-60U tokamak

Ishikawa, Masao; Kusama, Yoshinori; Takechi, Manabu; Nishitani, Takeo; Morioka, Atsuhiko; Sasao, Mamiko*; Isobe, Mitsutaka*; Krasilnikov, A.*; Kaschuck, Y. A.*

Review of Scientific Instruments, 75(10), p.3643 - 3645, 2004/10

 Times Cited Count:5 Percentile:66.27(Instruments & Instrumentation)

Measurement of energy distribution of charge exchange neutral particles by using Natural Diamond Detector (NDD) has been started on the JT-60U Tokamak. Because the NDD is sensitive to neutrons and $$gamma$$-rays too, the radiation shield has been set up around the NDD. Then energy distribution of neutral particles corresponding to injected neutral beam energy are successfully obtained. Also, enhance of neutral particle flux due to sawtooth oscillation and Alfven Eigenmode induced by N-NBI was observed. The performance of the NDD as CX neutral particle analyzer under the DD neutron filed was demonstrated on JT-60U.

Journal Articles

Present status of room temperature semiconductor detectors

Nuclear Instruments and Methods, 196(1), p.121 - 130, 1982/00

no abstracts in English

Oral presentation

detection of high energy heavy ion track in diamond

Sato, Shinichiro; Haruyama, Moriyoshi; Onoda, Shinobu; Teraji, Tokuyuki*; Isoya, Junichi*; Kada, Wataru*; Oshima, Takeshi; Hanaizumi, Osamu*

no journal, , 

no abstracts in English

Oral presentation

Superior radiation hardness of a single crystal CVD diamond detector under proton beam bombardment

Sato, Yuki; Murakami, Hiroyuki*; Shimaoka, Takehiro*; Tsubota, Masakatsu*; Kaneko, Junichi*

no journal, , 

Oral presentation

Single crystal CVD diamond detector for charged particle detection

Sato, Yuki

no journal, , 

no abstracts in English

Oral presentation

Fano factor evaluation of diamond detectors for alpha particles

Shimaoka, Takehiro*; Kaneko, Junichi*; Sato, Yuki; Tsubota, Masakatsu*; Shimmyo, Hiroaki*; Chayahara, Akiyoshi*; Watanabe, Hideyuki*; Umezawa, Hitoshi*; Mokuno, Yoshiaki*

no journal, , 

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