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Zeitschrift für Naturforschung A

Untersuchung des 5p2P3/2-Terms im Silber I-Spektrum durch Resonanzstreuung von Licht in elektrischen und magnetischen Feldern

Hans Bucka, D. Einfeld, J. Ney, J. Wilken

Published Jun 1, 1971• 9 citations
Publisher

Abstract

Abstract Using separated isotopes the hyperfine structure of the 5p 2P3/2-state in Ag I-spectrum was investigated by scattering the resonance line on an atomic beam in parallel magnetic and electric fields. With the theoretical positive sign of the Stark-constant β, the shift of the Heydenburg- and level-crossing-signals with electric fields can be explained by the following parameters: Ag (107) : A = - (32,4 ± 0.5) Mc/sec , Ag (109): A - - (37,3 ± 0.8) Mc/sec , β (2P3/2) = (5.15 ± 0.15) (kc/sec) (kV/cm) -2 , τ (2p3/2) = (6.3 ± 0.6 ) · 10-9 sec.

DOI
10.1515/zna-1971-0612

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The European Physical Journal A•Feb 1, 1969•1 citation
Abstract Using separated isotopes the hyperfine structure of the 5p 2P3/2-state in Ag I-spectrum was investigated by scattering the resonance line on an atomic beam in parallel magnetic and electric fields. With the theoretical positive sign of the Stark-constant β, the shift of the Heydenburg- and level-crossing-signals with electric fields can be explained by the following parameters: Ag (107) : A = - (32,4 ± 0.5) Mc/sec , Ag (109): A - - (37,3 ± 0.8) Mc/sec , β (2P3/2) = (5.15 ± 0.15) (kc/sec) (kV/cm) -2 , τ (2p3/2) = (6.3 ± 0.6 ) · 10-9 sec.
Using an Indium atomic beam as absorber the resonance fluorescence of the transitions 5d2D3/2 - 5p2P1/2 (λ = 3039 Å) and 6d2D3/2-5p2P 1/2 (λ=2560 Å) was measured as a function of an external magnetic field. In both states two signals were observed at magnetic fields, where three level crossings occur. The observed line shape is discussed for the case of overlapping level crossing components with regard to radiation width and hyperfine structure splitting. The experimental results can be described by the following values for the lifetime τ and the hyperfine structure constants A and B : 5d2D3/2: | A|=(64.5±1.0) Mc/sec·gJ/0.8; B/A = - 0.59±0.17; τ = ( 7.0± 0.4) · 10-9 sec · 0.8/gJ ; 6d2D3/2: | A | =(72.1 ±0.3) Mc/sec·gJ/0.8 ; B/A = - 0.47 ±0.05; τ = (25.5±1 ) ·10-9 sec-0.8/gJ . The values and the sign of the hyperfine structure constants indicate interconfiguration mixing.
Abstract The level-crossing-method has been used for an investigation of the hyperfine structure of the first excited 3 2P3/2-state of sodium applying an additional electric field parallel to the usual mag. netic field. By means of a detailed analysis of the measured change in intensity of the scattered fluorescence light due to the electric field the constant β of the quadratic Stark-effect of the 3 2P3/2-state of sodium was deduced to be β= (10.8± 1.2) kc/s·(kV/cm)2. The experimental result will be discussed with respect to a determination of upper and lower limits for oscillator strengths of transitions between the 3 2P3/2-state and S-states in the sodium spectrum.
Observing the change of the Hanle effect under the influence of a homogeneous electric field E the Stark effect of the (5p1/25d5/2)j=2-state in Sn I was studied. Due to the tensorial part β Jz 2E2 in the Hamiltonian of the second order Stark effect the signal of the zero field crossing (M ∓ 2, M′ = 0 β ≷ 0 ) is shifted to the magnetic field H with gJμBH=2 | β | E2. From these shifts for different electric field strengths the value of the Stark parameter |β| = 0.21(2) MHz/(kV/cm)2 · gJ/1.13 was deduced. A theoretical value of ß using Coulomb wave functions is discussed.
The Stark effect of the 5 s 2 S 1/2 –5 p 2 P 3/2 transition ( D 2 line) of Rb has been studied by high-resolution atomic-beam laser spectroscopy. The splittings of magnetic sublevels of 5 p 2 P 3/2 have been resolved, and the Stark shifts and splittings of the D 2 line have been measured at various electric fields. The scalar polarizability of the D 2 line and the tensor polarizability of the 5 p 2 P 3/2 level have been determined to be α s (5 p 2 P 3/2 ) - α s (5 s 2 S 1/2 ) = 136.95(89) kHz/(kV/cm) 2 and α t (5 p 2 P 3/2 ) = -40.91(38) kHz/(kV/cm) 2 , respectively, by considering the mixing between hyperfine structure levels of 5 p 2 P 3/2 . The precision of α t (5 p 2 P 3/2 ) has been improved by a factor of 2 compared with the previously reported values.