Published November 1986
| Version v1
Journal article
Determinations of Ngas and Prepl factors from commercially available parallel-plate chambers: AAPM Task Group 21 protocol
Creators
- 1. Massachusetts General Hospital Cancer Center, Boston
Description
Using a Farmer chamber as a reference dosimeter, we have measured the Ngas (cavity-gas calibration factor) and Prepl (replacement correction factor) values for four parallel-plate chambers: a Holt chamber, a Capintec chamber, a Markus chamber, and an SHM chamber. Ngas determinations were done primarily using 60Co photons and nominal 18-MeV electrons for Ngas determinations. For Prepl determinations, we used nominal 18-, 15-, 12-, 9-, 6-, and 4-MeV electrons
Additional details
Publishing Information
- Journal Title
- Med. Phys.
- Journal Issue
- no.6
- Series
- Med. Phys.
- ISSN
- 0094-2405
- CODEN
- MPHYA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 18051322
- Subject category
- S61: RADIATION PROTECTION AND DOSIMETRY;
- Descriptors DEI
- CALIBRATION; COBALT 60; ELECTRONS; IONIZATION CHAMBERS; PHOTONS; RADIOTHERAPY
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BOSONS; COBALT ISOTOPES; ELEMENTARY PARTICLES; FERMIONS; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTO; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LEPTONS; MASSLESS PARTICLES; MEASURING INSTRUMENTS; MEDICINE; MINUTES LIVING RADIOISOTOPES; NUCLEI; ODD-ODD NUCLEI; RADIATION DETECTORS; RADIOISOTOPES; THERAPY; YEARS LIVING RADIOISOTOPES