Resonance scattering of low-energy electrons from potassium atoms

Eyb, M

doi:10.1088/0022-3700/9/1/011

Cited by 14 publications

(8 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In transmission spectroscopy [16], the presence of the broad 4p 2 1 D e shape resonance apparently obscures other features in the total cross section occurring for frequencies close to the 4p 2 P o threshold. However, Eyb [6] observed small resonances in electron-K scattering, attributed to S and also to P states. In figure 4(b), the two-photon detachment rate is displayed up to frequencies in the region of the 5p 2 P o threshold.…”

Section: Two-photon Processesmentioning

confidence: 94%

“…Previous work on K − has been limited to the first two aspects, as can be found in the reviews by Buckman and Clark [3] and Ivanov [4] and in more recent theoretical work [5]. Our results on multiphoton detachment of K − focus on resonance structures studied in electron-K atom scattering experiments [6], as well as on strong-field effects.…”

Section: Introductionmentioning

confidence: 94%

“…The 1 S e and 1 D e contributions also exhibit the same behaviour in all three ions. Interest in the theoretical study of resonances and virtual states in negative alkaline ion spectra and results from experimental work [6,17,35] suggests the value of investigating the multiphoton detachment of K − in the region above the 4p 2 P o threshold up to the 5s 2 S e threshold of K. By using the five-state approximation in the B-spline code, it is possible to understand the main features close to the first excited state, and find any possible resonances lying below the 5s 2 S e threshold.…”

Section: Two-photon Processesmentioning

confidence: 99%

See 2 more Smart Citations

Single- and multiphoton detachment of K

Vinci

Glass

Hart

et al. 2003

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

Single- and multiphoton detachment rates have been calculated for K− using the R-matrix Floquet approach. Single-photon detachment rates, obtained at a laser field peak intensity of 109 W cm−2, are discussed and compared with other theoretical work. Two-photon detachment rates at the same intensity have also been obtained, and similarities with results from earlier calculations for Li− and Na− are discussed. Three-photon rates are also presented at this laser intensity, and are compared and contrasted with those arising in the single-photon case, since both involve resonance structure with 1Po symmetry. The influence of resonances such as the 5s2 1Se doubly excited state and excitations of the residual atom are also considered.

show abstract

Section: Two-photon Processesmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 94%

Section: Two-photon Processesmentioning

confidence: 99%

See 1 more Smart Citation

Single- and multiphoton detachment of K

Vinci

Glass

Hart

et al. 2003

J. Phys. B: At. Mol. Opt. Phys.

View full text Add to dashboard Cite

show abstract

“…In the heavier alkali anions Cs-and Rb-, Patterson etal. In low energy electron-potassium scattering, Eyb [9] has measured differential cross-sections revealing three resonances below the first 2S, ZD excited states of the potassium atom. Slater etal.…”

Section: Introductionmentioning

confidence: 99%

Description of interelectronic correlation with the Pluvinage method

Dulieu¹

1989

Z Phys D - Atoms, Molecules and Clusters

View full text Add to dashboard Cite

The electronic spectra of the alkali negative ions Li-, Na-, K -have been investigated with the Pluvinage method already used in various atomic and molecular two-electron problems. Energies of the lower 1S and 3pc bound states of these ions have been calculated first, in close agreement with experimental values. Some spatial properties of the wave function of each ion ground state are discussed, in order to analyze electron correlation. Doubly-excited states up to the sixth excitation limit of each neutral alkali atom are reported both in monoconfigurational calculations and in configuration interaction calculations. Our results are in good agreement with the few theoretical and experimental works available.

show abstract

“…Hils et al(1972) have measured relative elastic scattering of unpolarized electrons at 3.3 eV impact energy from a beam of spin-polarized potassium atoms. Relative elastic and inelastic differential cross sections for electron-potassium scattering have been determined in a crossedbeam experiment by Eyb (1976) from 2 to 3.2 eV and 20"-140" scattering angles.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Experiment on Electron Beam Injection for Tokamak Current Drive

Tanaka

Andõ

Ogura

et al. 1985

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

Normalized momentum-transfer cross sections and differential and integral cross sections for elastic scattering and for the excitation of the 4 p 2 P 3 2 , 1 and the (~S~S ,~ + 3 d 2 D 5 2 , 3 2 ) levels in potassium are reported at 6.7, 16 and 60 eV impact energies. There is considerable disagreement between the present experimental results and previous optical excitation measurements and theoretical results. Autoionization features associated with the 3p inner-shell excitations, some of which have been observed previously in optical absorption and ejected-electron spectra, have been detected in the electron impact energy-loss spectrum Williams W and Trajmar S 1974 Phys. Kec. Lett. 33 187 Zapesochnpi I P. Postoi E hT and Aleksakhin I S 1975 Zh. Eltsp. Teor. Fiz. 68 1724 Zapesochnyi I P and Shimon L L 1966 Opt. Specrrosc. 21 155 -1976 J . P h~s . B: Atofn. Molec. P~ZJS. 9 1529

show abstract

Resonance scattering of low-energy electrons from potassium atoms

Cited by 14 publications

References 9 publications

Single- and multiphoton detachment of K

Single- and multiphoton detachment of K

Description of interelectronic correlation with the Pluvinage method

Preliminary Experiment on Electron Beam Injection for Tokamak Current Drive

Contact Info

Product

Resources

About