junction detector

Junction detector

A device in which detection of radiation takes place in or near the depletion region of a reverse-biased semiconductor junction. The electrical output pulse is linearly proportional to the energy deposited in the junction depletion layer by the incident ionizing radiation. See Ionization chamber

Introduced into nuclear studies in 1958, the junction detector, or more generally, the nuclear semiconductor detector, revolutionized the field. In the detection of both charged particles and gamma radiation, these devices typically improved experimentally attainable energy resolutions by about two orders of magnitude over that previously attainable. To this they added unprecedented flexibility of utilization, speed of response, miniaturization, freedom from deleterious effects of extraneous electromagnetic (and often nuclear) radiation fields, low-voltage requirements, and effectively perfect linearity of output response. They are now used for a wide variety of diverse applications. They are used for general analytical applications, giving both qualitative and quantitative analysis in the microprobe and the scanning transmission electron microscopes. They are used in medicine, biology, environmental studies, and the space program. In the last category they continue to play a very fundamental role, ranging from studies of the radiation fields in the solar system to the composition of extraterrestrial surfaces. See Particle detector, Semiconductor

junction detector

[′jəŋk·shən di¦tek·tər]
(nucleonics)
A reverse-biased semiconductor junction functioning as a solid ionization chamber to produce an electric output pulse whose amplitude is linearly proportional to the energy deposited in the junction depletion layer by the incident ionizing radiation.
References in periodicals archive ?
Tenders are invited for Eoi for selection of technology partner for non linear junction detector
Other products include the ORION Non-Linear Junction Detector, and the CPM-700 Deluxe Countersurveillance Probe/Monitor.
The ORION Non-Linear Junction Detector (NLJD) from Research Electronics International (REI) is being implemented by GEO Group Inc, a private prison management company in the US, to detect and locate hidden mobile phones.
Our invention of a horizontal junction detector does away with conventional designs and creates a new structure that supports high speed operation and yet is compatible with a variety of waveguide heights including the larger waveguides needed for high performance WDM operation.
Tenders are invited for Purchase of non linear junction detector (nljd)
Haddad is responsible for next generation shallow junction detector and image sensor development.
Tenders are invited for Non Linear Junction Detector (Nljd)
It tests using a broadband and pulsed RF detector, a nonlinear junction detector, a metal detector, and a harmonic receiver.
SITG recently returned from visiting the distributor where they demonstrated to the distributor's high profile clients such proprietary products as the VIP-16 Bomb Jammer, a portable radio frequency detection and jamming system used in counter terrorism and bomb prevention, the ECMSA -1300 Electronic Countermeasure Signal Analyzer that detects virtually all clandestine transmitters and the VL-6500 Non-Linear Junction Detector which electromagnetically detects the presence of semi-conductors, electronic components and most radio frequency transmissions and surreptitious listening devices.
Tenders are invited for Camc For Non Linear Junction Detector And Cable And Wire Locator
In appropriate cases, the sweep team might consider the use of a Non-Linear Junction Detector (NLJD).