Measurement of radon emanation and impurity adsorption from argon gas using ultralow radioactive zeolite

TL;DR

This study develops an ultralow radioactive zeolite to reduce impurities in argon gas for particle physics experiments, measuring its radon emanation and impurity adsorption capabilities.

Contribution

The paper introduces a new ultralow radioactive zeolite specifically designed for impurity removal in detector gases used in rare event physics.

Findings

Radon emanation from the zeolite is significantly low.

The zeolite effectively adsorbs impurities from argon gas.

The material is suitable for use in sensitive physics experiments.

Abstract

The amount of radioactive impurities contaminated in the detector gases is required to be kept at a very low level for rare event particle physics such as dark matter and neutrino observation experiments. Zeolite is a well-known class of materials and is one of the possible candidates for removing impurities from these gases. At the same time, the amount of radioactive impurities released from the adsorbent material needs to be sufficiently small. In this paper, a development of a new ultralow radioactive zeolite as a product of the selection of ultralow radioactive materials is reported. Results on the radon emanation and impurity adsorption from argon gas measurements are also described.