Accession Number : AD0705152

Title :   SPECTROSCOPY IN THE VACUUM ULTRAVIOLET RANGING FROM 40 TO 500 A.

Descriptive Note : Final scientific rept. 1 Jun 67-30 Sep 69,

Corporate Author : HEBREW UNIV JERUSALEM (ISRAEL) DEPT OF PHYSICS

Personal Author(s) : Alexander,E. ; Fraenkel,B. S. ; Goldsmith,S.

Report Date : 12 FEB 1970

Pagination or Media Count : 30

Abstract : The spectra of Be(III), Be(IV), Fe(VII) to Fe(XI), Co(IX), to Co(XI), Ni(X), to Ni(XI), Cu(X), to Cu(XIII), Zn(XI) to Zn(XIII), Ga(XII), Ge(XIII), Y(IX) to Y(XIII), Zr(X) to Zr(XIV), Nb(XI) to Nb(XV), and Mo(XII) to Mo(XVI) were studied. These spectra were produced by an intense vacuum spark, operated in a triggered mode. Radiative transitions from autoionizing levels of Be III were observed close to the Lyman alpha line of Be IV. These transitions were classified and the dependence of their intensities on the discharge parameters was determined. A new method for estimating electron temperature was suggested. A new phenomenon of line splitting in extremely dense plasma was observed. The study of the fifth row elements is difficult due to the lack of previous investigation. Here some pioneer work was done. More than 200 new lines of Y, Nb, Zr, and Mo were identified, and a great part of them classified. A new X-ray spectrometer was invented and built to facilitate the study of X-ray spectra emitted from the spark. (Author)

Descriptors :   (*ATOMIC SPECTROSCOPY, *ULTRAVIOLET SPECTROSCOPY), TRANSITION METALS, X RAY SPECTROSCOPY, LINE SPECTRA, ISRAEL

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE