<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">proportional counters</topic></authority><related type="broader"><topic>nuclear energy measuring devices</topic></related><variant type="other"><topic>counters, proportional</topic></variant><variant type="other"><topic>gas counters</topic></variant><variant type="other"><topic>gas proportional counters</topic></variant><variant type="other"><topic>proportional counter</topic></variant><variant type="other"><topic>proportional gas counters</topic></variant> <note xml:lang="en"><![CDATA[ Radiation counters into which the sample is introduced in the form of a gas through the counter tube. The phenomenon of gas multiplication is used to increase pulse size which facilitates processing of the sample. ]]></note></mads>