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 …

Abstract The Calibration Laboratory (LCI) at the Instituto de Pesquisas Energéticas e
Nucleares (IPEN) is going to establish a Böhm extrapolation chamber as a primary standard …

The objective of the present work was to develop and validate a computational model of the
Beta Secondary Standard type 2 (BSS2) system, with sources, filters and the PTW 23392 …

摘要基于90Sr-90Y 和85 Kr 放射源产生的β 射线参考辐射场, 对非均整条件下β
射线参考辐射场中组织吸收剂量率进行了绝对测量. 采用电容法测量得到外推电离室的有效收集 …

In beta emitters, in order to evaluate the absorbed dose rate at different tissue depths, it is
necessary to determine the transmission factors. In this work, the transmission factors …

The objective of the present work was to developed an extrapolation chamber type PTW
model 23392 for standard beta radiation fields of 85Kr, 90Sr/90Y and 147Pm using MCNPX …

Metodologias para medição da dose e taxa de dose absorvida por radiações beta são
necessárias. Diversos radionuclídeos existentes são emissores beta e de radiação …