A dense electron target for the study of electron-ion collisions

Becker, R.; Müller, Alfred; Achenbach, C.; Tinschert, K.; Salzborn, E.

doi:10.1016/0168-583x(85)90329-5

Cited by 49 publications

(14 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After magnetic analysis and tight collimation, the ion beam was crossed with an intense electron beam. We used a high-current electron gun which delivers a ribbon-shaped beam at energies from 10 to 1000 eV and currents up to 450 mA (Becker et al 1985). After the interaction the product ions were separated magnetically from the incident beam and detected by a single-particle detector.…”

Section: Crossed-beams Experimental Methodsmentioning

confidence: 99%

Electron-impact single ionization of low-charged titanium ions

Hartenfeller

Aichele

Hathiramani

et al. 1998

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

View full text Add to dashboard Cite

The electron-impact single ionization of low-charged Ti ions was studied both experimentally and theoretically. Absolute cross sections for Ti q+ ions in charge states q = 1 to 6 except 3 were measured using a crossed-beams technique as well as calculated with the configuration-average distorted-wave method, including both direct ionization and excitationautoionization contributions. For charge states q = 4, 5 and 6, the measurements are in good agreement with the calculations considering that large components of the incident ion beam were in metastable configurations. The cross sections for single ionization of Ti 5+ and Ti 6+ were determined in part with a high-resolution energy-scan method. Besides contributions of excitation-autoionization mechanisms, a remarkable number of structures arising from resonantexcitation double-autoionization (REDA) processes could be observed.

show abstract

Section: Crossed-beams Experimental Methodsmentioning

confidence: 99%

Electron-impact single ionization of low-charged titanium ions

Hartenfeller

Aichele

Hathiramani

et al. 1998

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

View full text Add to dashboard Cite

show abstract

“…We have used two different electron guns for the measurement. For electron energies up to 1 keV we applied a high-current electron gun designed by Becker et al (1985) for all investigated primary ions. This gun delivers a ribbon-shaped beam and an electron current of up to 450 mA at 1 keV.…”

Section: Experimental Techniquementioning

confidence: 99%

Electron-impact single ionization of multiply charged aluminium ions

Aichele

Steidl

Hartenfeller

et al. 2001

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

View full text Add to dashboard Cite

Absolute total cross sections for electron-impact single ionization of Al q+ (q = 3-7) ions are investigated experimentally as well as theoretically. Employing the crossed-beams technique, the cross sections have been measured from below the respective ground state threshold up to 1 keV and partly up to 5.5 keV. The theoretical calculations were performed using the configuration-averaged distorted-wave method, including both direct ionization and excitationautoionization contributions from the 2p-shell. The measurements are in good agreement with the calculations considering a small content of metastable ions in the incident ion beam. Because of the strong dominance by direct ionization processes the semiempirical Lotz formula can describe the measured data as well.

show abstract

“…The so produced C q+ 60 fullerene ions were extracted at energies of 6 keV for q = 1 and 20 keV for q = 2 . After mass-to-charge analysis and a collimation to 2.5 2.5 mm 2 , the fullerene ion beam was crossed with an intense electron beam [13] at an angle of 90 . The product ions of the observed reactions were magnetically separated from the primary fullerene ion beam and counted in a single-particle detector 1 m behind the interaction region.…”

Section: -Experimentsmentioning

confidence: 99%

Ionisation and fragmentation of fullerene ions by electron impact

et al. 1997

Self Cite

View full text Add to dashboard Cite

Summary. -Absolute cross-sections for electron impact induced fragmentation, fragmentation-single-ionisation and fragmentation-double-ionisation were measured for the fullerene ions C + 60 and C + 58 . For the fullerene ion C 2+ 60 , fragmentation-singleionisation was measured with a loss of n C2 molecules n = 1 ; 2 ; 3. The cross-sections were determined from the respective threshold up to an electron energy of 1 keV using the animated crossed-beams technique.PACS 34.80.Gs -Molecular excitation and ionisation by electron impact. PACS 36.40.Qv -Stability and fragmentation of clusters. PACS 01.30.Cc -Conference proceedings. -IntroductionMany collision experiments with fullerene ions have been carried out in the past few years due to the possibility of the production of intense mass-to-charge-selected fullerene ion beams. Interesting and unexpected results were discovered in these studies. One of the most remarkable features of a singly ionised C + 60 cluster is its exceptional stability against unimolecular decomposition. Nevertheless, the main fragmentation chan-

show abstract

A dense electron target for the study of electron-ion collisions

Cited by 49 publications

References 1 publication

Electron-impact single ionization of low-charged titanium ions

Electron-impact single ionization of low-charged titanium ions

Electron-impact single ionization of multiply charged aluminium ions

Ionisation and fragmentation of fullerene ions by electron impact

Contact Info

Product

Resources

About