Radiation measurements by a cryogenic <i>pn</i> junction InSb detector with operating temperatures up to 115 K

Kanno, Ikuo; Yoshihara, Fumiki; Nouchi, Ryo; Sugiura, Osamu; Murase, Yasuhiro; Nakamura, Tatsuya; Katagiri, Masaki

doi:10.1063/1.1599067

Cited by 20 publications

(12 citation statements)

References 2 publications

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“…The study demonstrated that the photoactivation of 3% H 2 O 2 with 940 nm diode laser has an increased bactericidal effect and can achieve biofilm disruption due to the acceleration of hydroxyl radical generation by thermal energy. There are previous studies that demonstrated the synergistic effect of photolysis of H 2 O 2 with different light sources in periodontal disease and also in endodontic pathology [20][21][22][23][24].…”

Section: Resultsmentioning

confidence: 99%

Antimicrobial Effect of 940 nm Diode Laser based on Photolysis of Hydrogen Peroxide in the Treatment of Periodontal Disease

Odor¹,

Bechir²,

Violant³

et al. 2018

Rev. Chim.

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Moderate and severe periodontitis represents a challenge in the non-surgical periodontal therapy. Due to the lack of evidence regarding the antimicrobial effectiveness of 940 nm diode laser in periodontal treatment, this study aimed to evaluate the antimicrobial effect of hydrogen peroxide (H2O2) photolysis performed with 940 nm diode laser in the treatment of moderate and severe periodontitis. Twenty-five patients with 100 teeth were selected for this pilot study. The test teeth were randomly assigned to one of the four treatment groups: Group 1: scaling and root planning (SRP) (control group); and the following experimental groups: Group 2: H2O2; Group 3: 940 nm diode laser therapy; Group 4: 940 nm diode laser therapy and H2O2. Clinical examinations, like probing depth (PD), clinical attachment level (CAL) and bleeding on probing (BOP) were performed before and after the treatment. The microbiological evaluation, effectuated before and after the treatment, included nine periodontal bacteria species and investigated by means of real-time PCR assay. The clinical and bacterial differences in the tested groups, was assessed between control group and the other three experimental groups, as well as between the experimental groups. The total bacteria load was reduced for all four studied groups. Group 4 (diode laser + H2O2) showed significant bacterial reduction of the major periodontal bacteria like Pg., Tf., Td., Pi., Pm., Fn (p[0.001) than the other 3 groups (p]0.001). Also the periodontal clinical parameters, like PD, CAL and BOP showed a significant reduction after the photolysis of H2O2 with the 940 nm diode laser (p[0.001). Differences between tested groups showed a significant beneficial results in regard to Group 4.It is suggested that the photoactivation of H2O2 with the 940 nm diode laser can be used successfully in adjunctive to the non-surgical periodontal treatment as a bactericidal tool.

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Section: Resultsmentioning

confidence: 99%

Antimicrobial Effect of 940 nm Diode Laser based on Photolysis of Hydrogen Peroxide in the Treatment of Periodontal Disease

Odor¹,

Bechir²,

Violant³

et al. 2018

Rev. Chim.

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“…The estimated depletion layer thickness without applying bias voltage was some m: alpha particles with 5.5 MeV penetrated the depletion layer. The pulses due to the alpha particles were observed at the temperature from 2 to 115 K. 2) As an application of InSb detector, thermal neutrons were detected with the nuclear reaction of n + 3 He p + t. 5,6) When the InSb detector was employed in the detection of gamma rays emitted from 133 Ba, 81 keV in energy, large escape peak was clearly seen…”

Section: Liquid Phase Epitaxial Insb Crystal Growthmentioning

confidence: 99%

“…With commercial p-type InSb substrates, pn junction detectors and Schottky detectors were fabricated. 2,3) Also, Schottky detectors were made with undoped-type InSb substrates. 4) Due to the low resistivity of commercial InSb substrates, large noise appeared when bias voltage was applied: radiation detection was carried out without applying bias voltage in most cases.…”

Section: Liquid Phase Epitaxial Insb Crystal Growthmentioning

confidence: 99%

Radiation Detection by Liquid Phase Epitaxially Grown InSb Detector

Kanno

Morita

Sato

et al. 2011

Progress in Nuclear Science and Technology

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A radiation detector was fabricated with an epitaxially grown InSb crystal. The resistivity of the epitaxial crystal was 1.5 orders of magnitude higher than that of substrate crystal, on the other hand, the Hall mobility was smaller. The resistance of the InSb detector showed highest value among the previously fabricated ones. Pulses induced by alpha particles were observed, however, proper energy spectrum was not obtained, due to the poor charge collection brought by the small Hall mobility.

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“…The improvement in spectroscopic readout ASIC will also be necessary to ensure low enough noise to obtain Fano-limited resolution at subkeV energies as well. To date there is only a reported detection of MeV alpha particles with InSb [14], and IR focal plane detectors have low resistivity and very thin material that is mounted on semi-opaque substrates.…”

Section: Narrow Band Gapmentioning

confidence: 99%