Isotope shifts and hyperfine structure in the optical spectrum of platinum

1974 ◽  
Vol 341 (1626) ◽  
pp. 399-406 ◽  
Keyword(s):  
High Resolution ◽  
Hyperfine Structure ◽  
Optical Spectrum ◽  
Optical Measurements ◽  
Nuclear Deformation ◽  
Digital Recording ◽  
Mean Square ◽  
Isotope Shifts ◽  
Proton Distribution ◽  
Hyperfine Splittings

The lines λ 444.2nm, λ 304.2nm and λ 306.5nm of the arc spectrum of platinum have been studied under high resolution by using digital recording interferometry. The work extends the range of nuclei for which isotope shifts have been measured to include 190 Pt, and has provided some improvement in accuracy for the shifts involving other isotopes. Data are now available for all the stable platinum nuclei; the relative shifts, which are closely proportional to the changes in mean square radius of the proton distribution, are as follows: 190, 192; 0.905 ± 0.028.192, 194; 0.969 ± 0.007. 194, 195; 0.456 ± 0.004. 194, 196; 1.0. 196, 198; 1.084 ± 0.004. The data are discussed in terms of recent measurements of nuclear deformation in platinum. The hyperfine splittings of some levels have also been deduced from the optical measurements.

Isotope shifts and hyperfine structure in the atomic spectrum of platinum

1971 ◽  
Vol 322 (1550) ◽  
pp. 301-311 ◽  
Keyword(s):  
High Resolution ◽  
Nuclear Deformation ◽  
Mean Square ◽  
Specific Mass ◽  
Atomic Spectrum ◽  
Isotope Shifts ◽  
Mass Effects ◽  
Relative Field ◽  
Normal Mass ◽  
The Mean

Two lines in the arc spectrum of platinum have been studied by high resolution interferometry, and results have been obtained for the isotope shifts in both lines. No evidence is found for large specific mass effects and, after allowance for normal mass effects, the results for the two lines give the following relative field isotope shifts: 192-194: 194-196: 196-198 = 0.895 ± 0.009: 0.919 ± 0.004:1 and 194-195: 194-196 = 0.458 ± 0.003; these values are compared with the relative isotope shifts in mercury and thallium. Differences in the mean square radius of the proton distribution for the platinum isotopes are calculated from the field isotope shifts. The contribution of changes in nuclear deformation to the shifts is discussed.

Optical isotope shifts and hyperfine structure in Cd

1976 ◽  
Vol 352 (1668) ◽  
pp. 141-152 ◽  
Keyword(s):  
Stable Isotopes ◽  
High Resolution ◽  
Hyperfine Structure ◽  
Spectral Lines ◽  
Theoretical Interpretation ◽  
Digital Recording ◽  
Isotope Shifts ◽  
Precise Data ◽  
Field Effects

The spectral lines λ226.5, λ441.6, λ806.7 and λ853.3 nm of Cd II and λ508.6 nm of Cd I have been studied under high resolution by means of digital recording interferometry. The relative positions of all the stable isotopes of cadmium in all the lines have been deduced from the measurements. The main object of this study was to provide precise data for the simple p–s transitions λ226.5, λ806.7 and λ853.3 nm. Such lines are the most favourable for theoretical interpretation, and the new results are intended to provide a basis for the separation of mass and field effects in measured isotope shifts in cadmium. The hyperfine structure intervals, which are important in the interpretation of isotope shifts, have also been measured for all the levels involved in the five transitions.

Isotope shifts and hyperfine structure in the atomic spectrum of palladium

1976 ◽  
Vol 351 (1665) ◽  
pp. 267-275 ◽  
Keyword(s):  
High Resolution ◽  
Hyperfine Structure ◽  
Nuclear Charge ◽  
Digital Recording ◽  
Mean Square ◽  
Atomic Spectrum ◽  
Nuclear Charge Distribution ◽  
Change In The Mean ◽  
The Mean ◽  
First Time

The lines λ340.5 nm, λ357.1 nm, and λ677.4 nm of the arc spectrum of palladium have been studied under high resolution by means of digital recording interferometry. The even-even shifts are claimed to be more accurate than previously published work; the relative shifts determined in λ357.1 nm are 102 Pd - 104 Pd, 1.03(2); 104 Pd - 106 Pd, 1.00; 106 Pd - 108 Pd, 1.02(1); 108 Pd - 110 Pd, 0.92(2); 104 Pd - 105 Pd, 0.23(1). An odd-even shift has been measured for the first time in this element, and shows appreciable staggering. The relative shift 102 Pd - 104 Pd has been found to be substantially greater than the values reported in the literature. Values of the change in the mean square radius of the nuclear charge distribution have been deduced from the measurements, all to an accuracy of Ŧ15% ; these are: 102 Pd - 104 Pd, 0.176 fm 2 ; 104 Pd - 106 Pd, 0.170 fm 2 ; 106 Pd - 108 Pd, 0.173 fm 2 ; 108 Pd - 110 Pd, 0.153 fm 2 .

scholarly journals High-resolution measurements of isotope shifts and hyperfine structure in stable and radioactive lead isotopes

1983 ◽  
Vol 9 (4) ◽  
pp. 443-458 ◽  
Author(s):  
R C Thompson ◽  
M Anselment ◽  
K Bekk ◽  
S Goring ◽  
A Hanser ◽  
...  
Keyword(s):  
High Resolution ◽  
Hyperfine Structure ◽  
Lead Isotopes ◽  
Isotope Shifts

High resolution measurements of isotope shifts and hyperfine splittings for ytterbium using a CW tunable laser

1974 ◽  
Vol 7 (18) ◽  
pp. L513-L517 ◽  
Author(s):  
J H Broadhurst ◽  
M E Cage ◽  
D L Clark ◽  
G W Greenlees ◽  
J A R Griffith ◽  
...  
Keyword(s):  
High Resolution ◽  
Tunable Laser ◽  
Isotope Shifts ◽  
Hyperfine Splittings

Isotope shifts and hyperfine structure in the atomic spectrum of cadmium

1956 ◽  
Vol 237 (1211) ◽  
pp. 485-495 ◽  
Keyword(s):  
Hyperfine Structure ◽  
Shell Structure ◽  
Neutron Number ◽  
Nuclear Deformation ◽  
Atomic Spectrum ◽  
Isotope Shifts ◽  
Fabry Perot

The isotope shifts in the spark line λ 4416 of cadmium (4 d 10 5 p 2 P 3/2 ─4 d 9 5 8 2 2 D 3/2 ) are accurately measured by means of single and double Fabry─Perot etalons and with the use of electromagnetically enriched isotopes. The shifts between successive even isotopes are found to decrease with increasing neutron number in an irregular manner. Accurate values are obtained for the odd-even and odd-odd shifts in λ 4416; this involved the study of the h. f. s. of the lines λ 3250 and λ 3535. Pronounced odd-even staggering is found. Some conclusions on the change of nuclear deformation with neutron number are drawn and possible connexions with shell structure discussed.

High resolution measurements of hyperfine structure and isotope shifts in 9 spectral lines of Nd I

1981 ◽  
Vol 301 (2) ◽  
pp. 95-99 ◽  
Author(s):  
K. A. H. Leeuwen ◽  
E. R. Eliel ◽  
B. H. Post ◽  
W. Hogervorst
Keyword(s):  
High Resolution ◽  
Hyperfine Structure ◽  
Spectral Lines ◽  
Isotope Shifts
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