Observations of the 1s2s3S1-1s2p3P2,0 transitions in helium-like Ne8+ recoil ions produced in a gas target

Ultraviolet transitions from helium-like neon recoil ions have been observed. The recoil ions were produced in a gas target by collisions with incident beams of krypton, xenon and bromine. The wavelengths of the 1s2s 3S1-1s2p 3P2,0 transitions in Ne8+ were measured to be 124.816+or-0.003 and 127.779+or-0.008 nm respectively. The results agree with previous measurements in a theta pinch, and with recent calculations.

[1]  J. Hata,et al.  Tests of quantum electrodynamics for two-electron ions , 1982 .

[2]  M. Stamp,et al.  Accurate measurements of 1s2s 3S-1s2p 3P transition wavelengths of helium-like ions in Tokamak plasmas , 1981 .

[3]  S. J. Hinterlong,et al.  2 s − 2 p transitions in heliumlike ions , 1981 .

[4]  K. Schartner,et al.  K X-ray transitions from highly charged very slow Ne recoil ions produced by 1.4 MeV/amu very heavy ion impact , 1980 .

[5]  C. Cocke,et al.  Production of highly charged low-velocity recoil ions by heavy-ion bombardment of rare-gas targets. [25 to 45 MeV] , 1979 .

[6]  G. Drake.  Unified relativistic theory for 1s2p P13-1s2 S01 and 1s2p P11-1s2 S01 frequencies and transition rates in heliumlike ions , 1979 .

[7]  P. H. Heckmann,et al.  Observations of 1s2s3S-1s2p3P transitions in helium-like Si12+ , 1979 .

[8]  R. Sayer.  Semi-empirical formulas for heavy-ion stripping data , 1977 .

[9]  W. H. King,et al.  Cu II spectral lines and their suitability as wavelength standards in the vacuum ultraviolet , 1977 .

[10]  Glen W. Erickson,et al.  Energy levels of one‐electron atoms , 1977 .

[11]  N. Stolterfoht,et al.  Auger emission for highly ionised neon produced in 200 MeV Xe31++Ne collisions , 1977 .

[12]  D. J. Pegg,et al.  Production of soft X-ray emitting slow multiply charged ions - Recoil ion spectroscopy , 1977 .

[13]  P. Blanchard.  Nonrelativistic-energy Z-expansion coefficients for singly excited S and P states of two-electron ions , 1976 .

[14]  C. Pekeris,et al.  Two-electron S and P term values with smooth Z dependence , 1975 .

[15]  R. Kauffman,et al.  Relative multiple ionization cross sections of neon by projectiles in the 1-2-MeV/amu energy range , 1975 .

[16]  A. Ermolaev.  Electron density at the nucleus and the Lamb shift of $sup 3$P levels of two-electron ions , 1975 .

[17]  V. Kaufman,et al.  Reference Wavelengths From Atomic Spectra in the Range 15 Å to 25000 Å , 1974 .

[18]  Marc E. H. Jones,et al.  Ionization potentials, radiative corrections and singlet-triplet corrections in the ground, n1,3S and n1,3P states of two-electron ions , 1974 .

[19]  C. Pekeris,et al.  Correction to then P 13Levels of the Helium Isoelectronic Sequence Owing to Mixing with then P 11State , 1973 .

[20]  A. Ermolaev.  Lamb shift in heliumlike ions , 1973 .

[21]  C. Pekeris,et al.  S AND P STATES OF THE HELIUM ISOELECTRONIC SEQUENCE UP TO Z = 10. , 1971 .

[22]  W. Engelhardt,et al.  OBSERVATION OF 23S-23P TRANSITIONS IN HE I ISOELECTRONIC SEQUENCE , 1971 .

[23]  J. D. Garcia,et al.  Energy Level and Line Tables for One-Electron Atomic Spectra* , 1965 .

[24]  F. Paul,et al.  The Extreme Ultraviolet Spectra of Ne IV, V and VI , 1941 .