A technique for absolute measurements in near threshold excitation of positive ions: application to excitation of

Autor:	Jason B. Greenwood, R W O'Neill, B. Srigengan, I. G. Hughes, Ian Williams
Rok vydání:	1998
Předmět:	Physics Deflection (physics) Spectrometer Scattering Applied Mathematics Detector Electron Atomic physics Instrumentation Engineering (miscellaneous) Excitation Ion Magnetic field
Zdroj:	Measurement Science and Technology. 9:930-938
ISSN:	1361-6501 0957-0233
DOI:	10.1088/0957-0233/9/6/010
Popis:	An electron-ion crossed beams experiment has been developed in which the energy loss of scattered electrons is used to determine cross sections for excitation in positive ions. Scattered electrons are confined by an axial magnetic field and are channelled into a detector using reflecting potentials and an (trochoidal) deflection. Complete collection of these electrons along with monitoring of the overlap and current of the beams enables absolute total cross sections to be determined. This technique has been used to study near threshold excitation of the D resonance transition in . , CII, trochoidal spectrometer
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c60f7617ad4aed70f861be7ac17a4a47 https://doi.org/10.1088/0957-0233/9/6/010 Zobrazit plný text záznamu