Over the past 35 years, the Calibration Laboratory of IPEN (LCI) has seen significant
advancements in the development of ionization chambers. This paper highlights the key …

An extrapolation chamber is a parallel-plate ionization chamber with an adjustable air-cavity
volume through the variation of the distance between the collecting electrode and the …

This paper aims to show how the variance reduction technique “Geometry splitting/Russian
roulette” improves the statistical error and reduces uncertainties in the determination of the …

Ionization chambers are the most utilized dosimeters for precise measurements of absorbed
dose, as required eg, in radiotherapy. The most common type, for this application, is the …

Abstract In radionuclide metrology, Monte Carlo (MC) simulation is widely used to compute
parameters associated with primary measurements or calibration factors. Although MC …

An extrapolation chamber of type Böhm 23392, used for the dosimetry of RQR beam
qualities at the Secondary Standard Dosimetry Laboratory of King Faisal Specialist Hospital …

Ionization chambers are often used in a phantom of material different from their walls,
leading to a fluence perturbation. The main goal of this paper is to investigate the water …

A cavity ionization chamber, made of PVC coated with graphite, was developed and tested
to verify its applicability as a reference dosimeter for 60 Co beams. In order to characterize …

The absorbed dose rate is the main characterization quantity for beta radiation. The
extrapolation chamber is considered the primary standard instrument. To determine …

Extrapolation chamber is a special parallel-plate ionization chamber, particularly suggested
for low penetrating radiations. Its sensitive volume is varied through a change of the inter …