Moisture proof columnar cesium iodide (CsI) layers for gas avalanche microdetector

I. J. Park; H. S. Cho; W. S. Hong; V. Perez-Mendez; J. Kadyk

Moisture proof columnar cesium iodide (CsI) layers for gas avalanche microdetector

I. J. Park, H. S. Cho, W. S. Hong, V. Perez-Mendez, J. Kadyk

Department of Materials Science and Engineering

Lawrence Berkeley National Laboratory

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Cesium Iodide columnar layers having diameters of ≈ 3μm, and with wall spacing of ≈ 1μm act as secondary electron emitters and can be used for detection of radiation: charged particles, x-rays and gamma rays. With a large enough electric field across the columnar layers, ≈ 400μm in thickness, gas avalanche gain is evident when placed in a suitable gas, such as P10 or argon-ethane mixtures. The cesium iodide columns are damaged by ambient moisture. This damage can be prevented by evaporating protecting layers of hydrocarbons, such as anthracene and stilbene or inorganic materials, such as mercuric iodide. Columnar layers with 20 nm coatings mercurie iodide yield more than 30,000 electrons on average when traversed by electrons from a ⁹⁰Sr beta source.

Original language	English
Title of host publication	IEEE Nuclear Science Symposium and Medical Imaging Conference
Publisher	IEEE
Pages	96-100
Number of pages	5
ISBN (Print)	0780350227
State	Published - 1999
Event	Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record - Toronto, Que, Can Duration: 8 Nov 1998 → 14 Nov 1998

Publication series

Name	IEEE Nuclear Science Symposium and Medical Imaging Conference
Volume	1

Conference

Conference	Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record
City	Toronto, Que, Can
Period	8/11/98 → 14/11/98

Cite this

@inproceedings{a3613ca33ea94a3681db3df14a8f81c0,

title = "Moisture proof columnar cesium iodide (CsI) layers for gas avalanche microdetector",

abstract = "Cesium Iodide columnar layers having diameters of ≈ 3μm, and with wall spacing of ≈ 1μm act as secondary electron emitters and can be used for detection of radiation: charged particles, x-rays and gamma rays. With a large enough electric field across the columnar layers, ≈ 400μm in thickness, gas avalanche gain is evident when placed in a suitable gas, such as P10 or argon-ethane mixtures. The cesium iodide columns are damaged by ambient moisture. This damage can be prevented by evaporating protecting layers of hydrocarbons, such as anthracene and stilbene or inorganic materials, such as mercuric iodide. Columnar layers with 20 nm coatings mercurie iodide yield more than 30,000 electrons on average when traversed by electrons from a 90Sr beta source.",

author = "Park, {I. J.} and Cho, {H. S.} and Hong, {W. S.} and V. Perez-Mendez and J. Kadyk",

year = "1999",

language = "English",

isbn = "0780350227",

series = "IEEE Nuclear Science Symposium and Medical Imaging Conference",

publisher = "IEEE",

pages = "96--100",

booktitle = "IEEE Nuclear Science Symposium and Medical Imaging Conference",

note = "Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record ; Conference date: 08-11-1998 Through 14-11-1998",

}

Park, IJ, Cho, HS, Hong, WS, Perez-Mendez, V & Kadyk, J 1999, Moisture proof columnar cesium iodide (CsI) layers for gas avalanche microdetector. in IEEE Nuclear Science Symposium and Medical Imaging Conference. IEEE Nuclear Science Symposium and Medical Imaging Conference, vol. 1, IEEE, pp. 96-100, Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record, Toronto, Que, Can, 8/11/98.

Moisture proof columnar cesium iodide (CsI) layers for gas avalanche microdetector. / Park, I. J.; Cho, H. S.; Hong, W. S. et al.
IEEE Nuclear Science Symposium and Medical Imaging Conference. IEEE, 1999. p. 96-100 (IEEE Nuclear Science Symposium and Medical Imaging Conference; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Moisture proof columnar cesium iodide (CsI) layers for gas avalanche microdetector

AU - Park, I. J.

AU - Cho, H. S.

AU - Hong, W. S.

AU - Perez-Mendez, V.

AU - Kadyk, J.

PY - 1999

Y1 - 1999

N2 - Cesium Iodide columnar layers having diameters of ≈ 3μm, and with wall spacing of ≈ 1μm act as secondary electron emitters and can be used for detection of radiation: charged particles, x-rays and gamma rays. With a large enough electric field across the columnar layers, ≈ 400μm in thickness, gas avalanche gain is evident when placed in a suitable gas, such as P10 or argon-ethane mixtures. The cesium iodide columns are damaged by ambient moisture. This damage can be prevented by evaporating protecting layers of hydrocarbons, such as anthracene and stilbene or inorganic materials, such as mercuric iodide. Columnar layers with 20 nm coatings mercurie iodide yield more than 30,000 electrons on average when traversed by electrons from a 90Sr beta source.

AB - Cesium Iodide columnar layers having diameters of ≈ 3μm, and with wall spacing of ≈ 1μm act as secondary electron emitters and can be used for detection of radiation: charged particles, x-rays and gamma rays. With a large enough electric field across the columnar layers, ≈ 400μm in thickness, gas avalanche gain is evident when placed in a suitable gas, such as P10 or argon-ethane mixtures. The cesium iodide columns are damaged by ambient moisture. This damage can be prevented by evaporating protecting layers of hydrocarbons, such as anthracene and stilbene or inorganic materials, such as mercuric iodide. Columnar layers with 20 nm coatings mercurie iodide yield more than 30,000 electrons on average when traversed by electrons from a 90Sr beta source.

UR - http://www.scopus.com/inward/record.url?scp=0032597376&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0032597376

SN - 0780350227

T3 - IEEE Nuclear Science Symposium and Medical Imaging Conference

SP - 96

EP - 100

BT - IEEE Nuclear Science Symposium and Medical Imaging Conference

PB - IEEE

T2 - Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record

Y2 - 8 November 1998 through 14 November 1998

ER -

Moisture proof columnar cesium iodide (CsI) layers for gas avalanche microdetector

Abstract

Publication series

Conference

Other files and links

Fingerprint

Cite this