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ABSTRACT THE structure of the silver lines 3280 A. and 3383 A. have been examined with Lummer plates by W. Mohammad and P. N. Sharma1 using a specially constructed vacuum arc. They report

identical triplet structures of intensity ratio 5:5:1 and separations of 0.218 and 0.116 cm.-1 respectively, the weaker component being on the violetside. They therefore attribute this

structure to the common 5_s_2_S_½ term, which, with a _J_ value of ½ should only give a fine structure multiplicity 2_J_ + 1 when _J_⋜_I_. A triplet could only arise if there were an

isotopic displacement effect and provided the _g_ (_I_) factors of the nucleii differed so that two of the four components superposed. In this somewhat unlikely event the intensity ratios

should be very different from the values quoted above since the abundance ratio is unity. This, however, would not be a serious contradiction since it is well known that intensity

measurements with resonance lines are necessarily unreliable owing to selfabsorption. Access through your institution Buy or subscribe This is a preview of subscription content, access via

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IONS IN THE DEEP ULTRAVIOLET RANGE Article Open access 23 March 2023 STRUCTURAL TRENDS IN ATOMIC NUCLEI FROM LASER SPECTROSCOPY OF TIN Article Open access 08 June 2020 ELECTRON CORRELATION

AND RELATIVISTIC EFFECTS IN THE EXCITED STATES OF RADIUM MONOFLUORIDE Article Open access 03 March 2025 REFERENCES * _Indian J. Phys._, 6, 75 ; 1931. Download references AUTHOR INFORMATION

AUTHORS AND AFFILIATIONS * Wheatstone Laboratory, King's College, Strand, W.C.2. W. E. WILLIAMS & A. MIDDLETON Authors * W. E. WILLIAMS View author publications You can also search

for this author inPubMed Google Scholar * A. MIDDLETON View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions

ABOUT THIS ARTICLE CITE THIS ARTICLE WILLIAMS, W., MIDDLETON, A. Fine Structure of the Resonance Ag I Lines. _Nature_ 131, 692 (1933). https://doi.org/10.1038/131692a0 Download citation *

Issue Date: 13 May 1933 * DOI: https://doi.org/10.1038/131692a0 SHARE THIS ARTICLE Anyone you share the following link with will be able to read this content: Get shareable link Sorry, a

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