BIOMAT Database Logo BIOMAT Database Logo

A microdosimetry chamber for low-energy X rays. 2002

S A Marino, and G W Johnson
RARAF, Center for Radiological Research, Columbia University, PO Box 21, Irvington, NY 10533, USA. sm14@columbia.edu

A wall-less proportional counter designed to measure single event spectra produced by low energy X rays is described. The sensitive volume of the counter and the housing are made entirely of non-metallic materials to minimise distortions in the secondary electron spectrum.

UI MeSH Term Description Entries
D011874 Radiometry The measurement of radiation by photography, as in x-ray film and film badge, by Geiger-Mueller tube, and by SCINTILLATION COUNTING. Geiger-Mueller Counters,Nuclear Track Detection,Radiation Dosimetry,Dosimetry, Radiation,Geiger Counter,Geiger-Mueller Counter Tube,Geiger-Mueller Probe,Geiger-Mueller Tube,Radiation Counter,Counter Tube, Geiger-Mueller,Counter Tubes, Geiger-Mueller,Counter, Geiger,Counter, Radiation,Counters, Geiger,Counters, Geiger-Mueller,Counters, Radiation,Detection, Nuclear Track,Dosimetries, Radiation,Geiger Counters,Geiger Mueller Counter Tube,Geiger Mueller Counters,Geiger Mueller Probe,Geiger Mueller Tube,Geiger-Mueller Counter Tubes,Geiger-Mueller Probes,Geiger-Mueller Tubes,Probe, Geiger-Mueller,Probes, Geiger-Mueller,Radiation Counters,Radiation Dosimetries,Tube, Geiger-Mueller,Tube, Geiger-Mueller Counter,Tubes, Geiger-Mueller,Tubes, Geiger-Mueller Counter
D002138 Calibration Determination, by measurement or comparison with a standard, of the correct value of each scale reading on a meter or other measuring instrument; or determination of the settings of a control device that correspond to particular values of voltage, current, frequency or other output. Calibrations
D004867 Equipment Design Methods and patterns of fabricating machines and related hardware. Design, Equipment,Device Design,Medical Device Design,Design, Medical Device,Designs, Medical Device,Device Design, Medical,Device Designs, Medical,Medical Device Designs,Design, Device,Designs, Device,Designs, Equipment,Device Designs,Equipment Designs
D012680 Sensitivity and Specificity Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed) Specificity,Sensitivity,Specificity and Sensitivity
D014965 X-Rays Penetrating electromagnetic radiation emitted when the inner orbital electrons of an atom are excited and release radiant energy. X-ray wavelengths range from 1 pm to 10 nm. Hard X-rays are the higher energy, shorter wavelength X-rays. Soft x-rays or Grenz rays are less energetic and longer in wavelength. The short wavelength end of the X-ray spectrum overlaps the GAMMA RAYS wavelength range. The distinction between gamma rays and X-rays is based on their radiation source. Grenz Ray,Grenz Rays,Roentgen Ray,Roentgen Rays,X Ray,X-Ray,Xray,Radiation, X,X-Radiation,Xrays,Ray, Grenz,Ray, Roentgen,Ray, X,Rays, Grenz,Rays, Roentgen,Rays, X,X Radiation,X Rays,X-Radiations

Related Publications

S A Marino, and G W Johnson
A vacuum chamber investigation of low energy electrons liberated by x rays.
July 1968, The British journal of radiology,
S A Marino, and G W Johnson
The application of microdosimetry to the metrology of low-energy X rays used in mammography.
March 1992, The British journal of radiology,
S A Marino, and G W Johnson
The measurement of low energy x-rays. IV: Total absorption ionization chamber.
October 1968, Physics in medicine and biology,
S A Marino, and G W Johnson
Characterization of an extrapolation chamber for low-energy X-rays: experimental and Monte Carlo preliminary results.
July 2012, Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine,
S A Marino, and G W Johnson
Microdosimetry of 10-15 MeV bremsstrahlung x rays.
January 1984, Medical physics,
S A Marino, and G W Johnson
Microdosimetry of low-energy electrons.
December 2012, International journal of radiation biology,
S A Marino, and G W Johnson
A comparison of ionization-chamber and water-calorimeter dosimetry for high-energy x rays.
January 1991, Medical physics,
S A Marino, and G W Johnson
Development of improved free-air ionisation chamber as absolute dosimetry standard for low-energy X rays in INER.
February 2010, Radiation protection dosimetry,
S A Marino, and G W Johnson
Benchmark of penelope for low and medium energy X-rays.
June 2009, Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB),
S A Marino, and G W Johnson
An air ionization chamber for soft X-rays.
December 1949, The Review of scientific instruments,
Copied contents to your clipboard!