Pressure Measurement by Photoelectron Counting

Shigeyuki Sekine; Kiyohide Kokubun; Shingo Ichimura; Hazime Shimizu

doi:10.3131/jvsj.37.714

Pressure Measurement by Photoelectron Counting

Shigeyuki Sekine, Kiyohide Kokubun, Shingo Ichimura, Hazime Shimizu

Research output: Contribution to journal › Article › peer-review

Abstract

The measurement of gas pressure in ultrahigh vacuum was carried out by detecting laser-generated photoelectrons. Xenon atoms filling a vacuum chamber were nonresonantly ionized by a picosecond laser pulse. The laser intensity dependence of the number of ions produced was measured, and almost all xenon atoms in a focal area were found to be ionized. The number of photoelectrons produced was also measured as a function of xenon pressure. The signal intensity was proportional to xenon pressure in the range from 10^-2 to 10^-7 Pa.

Original language	English
Pages (from-to)	714-717
Number of pages	4
Journal	Shinku/Journal of the Vacuum Society of Japan
Volume	37
Issue number	9
DOIs	https://doi.org/10.3131/jvsj.37.714
Publication status	Published - 1994
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces, Coatings and Films
Electrical and Electronic Engineering

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author = "Shigeyuki Sekine and Kiyohide Kokubun and Shingo Ichimura and Hazime Shimizu",

year = "1994",

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AU - Sekine, Shigeyuki

AU - Kokubun, Kiyohide

AU - Ichimura, Shingo

AU - Shimizu, Hazime

PY - 1994

Y1 - 1994

N2 - The measurement of gas pressure in ultrahigh vacuum was carried out by detecting laser-generated photoelectrons. Xenon atoms filling a vacuum chamber were nonresonantly ionized by a picosecond laser pulse. The laser intensity dependence of the number of ions produced was measured, and almost all xenon atoms in a focal area were found to be ionized. The number of photoelectrons produced was also measured as a function of xenon pressure. The signal intensity was proportional to xenon pressure in the range from 10-2 to 10-7 Pa.

AB - The measurement of gas pressure in ultrahigh vacuum was carried out by detecting laser-generated photoelectrons. Xenon atoms filling a vacuum chamber were nonresonantly ionized by a picosecond laser pulse. The laser intensity dependence of the number of ions produced was measured, and almost all xenon atoms in a focal area were found to be ionized. The number of photoelectrons produced was also measured as a function of xenon pressure. The signal intensity was proportional to xenon pressure in the range from 10-2 to 10-7 Pa.

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Pressure Measurement by Photoelectron Counting

Abstract

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