Production of Thick Semiconductor Radiation Detectors by Lithium Drifting

Miller, G. L.; Pate, Brian D.; Wagner, S.

doi:10.1109/tns.1963.4323264

Cited by 27 publications

(3 citation statements)

References 10 publications

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“…A 25 mm diameter, 4 mm thick cylindrical wafer of float-zone, p-type, 300 ohm cm silicon was lithium-drifted to a depth of 3 mm using the constant wattage method (Miller, Pate and Wagner 1963). Following the drift, the diode was cut into a 16 mm square.…”

Section: Manufacturementioning

confidence: 99%

Semiconductor diode matrix for isotope localization

Detko¹

1969

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A semiconductor matrix has been developed using lithium-drifted diodes, and successfully applied t o two-dimensional radiation localization. It is based on the constructiop of an array of individual detection regions upon a single silicon diode by orthogonal partitioning of the p and n regions. I n the matrix formation, parallel grooves, 0.5 mm wide, were cut into both the p and n faces of a silicon diode, penetrating the intrinsic region. The measured resistance achieved across all grooves is a t least loB ohms, as a result of chemical etching and surface treatment. The isolation of the electrode regions bounded by the grooves on the p and n sides of the device permits row and column addressing of charge pulses from ionizing radiations. By interconnecting the rows and interconnecting the columns of a number of such units, larger areas can be monitored. A resolution of (3 x 3) mm has been achieved. Tho configuration is considered suit8ble for the construction of a gamma camera. Construction details and operational characteristics are presented.

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Section: Manufacturementioning

confidence: 99%

Semiconductor diode matrix for isotope localization

Detko¹

1969

pmb

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“…In the early days of germanium γ-ray detection, less purified material was used. The compensation method for net doping density reduction was based on the lithium drifting technique [11]. With an applied voltage bias, the drift of the interstitial Li+ ions through the detector is made possible leading to the neutralization of acceptors by the creation of Li+ acceptor pairs.…”

Section: Introductionmentioning

confidence: 99%

“…These crystals exhibit high levels of interstitial hydrogen, which may form complexes with some metallic impurities such as copper [13]. Good quality crystals (despite being small) may be fabricated in University labs [11,14] which show that nowadays the availability of such crystals is better than ever. Gamma-ray detector manufacturers usually use commercially available crystals, which are subsequently processed, or in some cases fabricate the material itself.…”

Section: Introductionmentioning

confidence: 99%

High Purity Germanium: From Gamma-Ray Detection to Dark Matter Subterranean Detectors

Fourches¹,

Zielińska²,

Charles³

2019

Use of Gamma Radiation Techniques in Peaceful Applications

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High purity germanium remains the material of choice for the detection of photons in the range of MeV or higher, down to the hard X-ray range. Since the operation of HPGe-based detectors is possible only at or below the liquid nitrogen temperature, their advantage is mainly the resolution, which matches the Fano factor if appropriate cooled electronic readout is used. We focus here on present-day applications of HPGe detectors, which are now broader than ever despite the recent development of room-temperature photon detectors based on binary compounds. We present in particular dark matter detectors and γ-ray trackers as examples of the recent applications of HPGe as a detecting medium. More generally, we discuss the future of γ-ray detectors and the role that the semiconductor detectors will keep with respect to alternative detection materials. This chapter is an introduction to this general topic, and the reader is encouraged to refer to research and review articles on this subject published in the past or recently.

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Die Herstellung von Halbleiterdetektoren

Büker¹

1971

Theorie Und Praxis Der Halbleiterdetektoren Für Kernstrahlung

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Production of Thick Semiconductor Radiation Detectors by Lithium Drifting

Cited by 27 publications

References 10 publications

Semiconductor diode matrix for isotope localization

Semiconductor diode matrix for isotope localization

High Purity Germanium: From Gamma-Ray Detection to Dark Matter Subterranean Detectors

Die Herstellung von Halbleiterdetektoren

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