Photoionisationsuntersuchungen an Atomstrahlen

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Bibliographische Detailangaben
Zeitschriftentitel:	Zeitschrift für Naturforschung A
Personen und Körperschaften:	Comes, F. J., Elzer, A., Speier, F.
In:	Zeitschrift für Naturforschung A, 23, 1968, 1
Format:	E-Article
Sprache:	Unbestimmt
veröffentlicht:	Walter de Gruyter GmbH
Schlagwörter:	Physical and Theoretical Chemistry General Physics and Astronomy Mathematical Physics

Details
Zusammenfassung:	<jats:p>The crossed beam technique is for the first time used in a mass spectrometric investigation of photoionization products. The photoionization threshold of atomic hydrogen is 911 Å and its photoionization cross section is exactly calculable. This allows the amount of ionization to be calculated, if the intensity of the radiation and the particle density are known. On the other hand, an unknown photon flux can be determined from the measured proton current. With the new technique the absolute photoelectric yield and/or the photoionization cross section of gases can be measured.</jats:p><jats:p>The experimental device consists essentially of a UV monochromator, a hydrogen atomic beam, and a mass spectrometer. By the atomic beam technique it is also possible to measure the photoionization cross section of unstable particles such as atomic oxygen and atomic nitrogen.</jats:p>
ISSN:	0932-0784 1865-7109
DOI:	10.1515/zna-1968-0118