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The CD V-700 is a Geiger counter employing a probe equipped with a Geiger–Müller tube manufactured by several companies under contract to US federal civil defense agencies in the 1950s and 1960s. This unit is quite sensitive and can be used to measure low levels of gamma radiation and detect beta radiation. In cases of high-radiation fields ...
A Geiger counter (/ ˈ ɡ aɪ ɡ ər /, GY-gər; [1] also known as a Geiger–Müller counter or G-M counter) is an electronic instrument used for detecting and measuring ionizing radiation. It is widely used in applications such as radiation dosimetry , radiological protection , experimental physics and the nuclear industry .
one Geiger–Müller tube: yes USB, Bluetooth, and WiFi Clock, GPS, open-source bGeigieZen NFW [5] Japan: 17x9.9x47 one 18650: LCD with touchscreen: No Yes one Geiger–Müller tube: yes USB, Bluetooth, and WiFi Clock, GPS, open-source DKG-RM1203M [6] Belarus: 125x42x24 90 Two LR44: LCD Yes No Geiger–Müller tube: 0.01–2000 1–2*10 5? No ...
Geiger-Müller counter with dual counts/dose rate display measuring a "point source". The dose per count is known for this specific instrument by calibration. The count rates of cps and cpm are generally accepted and convenient practical rate measurements. They are not SI units, but are de facto radiological units of measure in widespread use.
The CD V-700 (often written as "CDV-700") is a Geiger counter employing a probe equipped with a Geiger–Müller tube, manufactured by several companies under contract to United States federal civil defense agencies in the 1950s and 1960s. While all models adhere to a similar size, shape, coloring and form-factor, there were substantial ...
Geiger–Müller tubes are the primary components of Geiger counters. They operate at an even higher voltage, selected such that each ion pair creates an avalanche, but by the emission of UV photons, multiple avalanches are created which spread along the anode wire, and the adjacent gas volume ionizes from as little as a single ion pair event.
These use a conventional Geiger-Muller tube, typically a ZP1301 or similar energy-compensated tube, requiring between 600 and 700V and pulse detection components. The display on most is a bubble or miniature LCD type with 4 digits and a discrete counter integrated chip such as 74C925/6.
The Bothe–Geiger experiment was the first significant coincidence experiment to test the transfer of energy between the incoming photon and the electron in this process. The experiment utilized two Geiger counters: one to detect the initial recoiling election and one to simultaneously detect a secondary electron recoil caused by the photonic ...