Photoionisation of Ne(2p53p3D3) atoms and the production of state-selected, polarised Ne+(2p5 2P3/2) ions

Ganz, J.; Lewandowski, B.; Siegel, A.; Bußert, W.; Waibel, H.; Ruf, Matthias; Hotop, H.

doi:10.1088/0022-3700/15/14/001

Cited by 24 publications

(32 citation statements)

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“…Based on our experience with resonant two-photon excitation and ionisation of metastable rare gas atoms (Ganz et al 1982, Harth et al 1987Schohl et al 1991), we have developed a novel laser photoelectron method (see Fig. 3) for electron attachment studies at sub-meV resolution .…”

Section: Experimental Aspectsmentioning

confidence: 99%

Attachment of Electrons to Molecules at meV Resolution

Klar¹,

Ruf²,

1992

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Section: Experimental Aspectsmentioning

confidence: 99%

Attachment of Electrons to Molecules at meV Resolution

Klar¹,

Ruf²,

1992

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“…For isotopes with zero nuclear spin (i. e. all rare gas isotopes with even mass number, among them the most abundant isotopes 2°Ne, 4°Ar, 84Kr, 132Xe) the absence of hyperfine structure allows strong, repetitive pumping of the Rg* (ms 3P 2 -m p 3D3) transition, thereby easily achieving essentially equal populations in the pumped Rg* (ms 3P2) and the excited Rg* (mp 3D3) level [2,3]. Our group has exploited this excitation scheme for over [2,3,29,39,40] and Penning ionization [41,42] involving Ne* (3p 3D3) atoms. More recently, we have also studied photoionization of Ar* (4p, J = 1 -3) and Kr* (5p, J = 1 -3) atoms [43,44] and collision processes of Ne** (ns, nd) and Ar** (ns, nd) Rydberg atoms, excited with a cw single mode dye laser from the respective Rg* (mp 3D3) intermediate level [45,46].…”

Section: Efficient Cw Two-photon Ionization O F Metastable Rare Gas Amentioning

confidence: 99%

“…5.1). It can, however, also be used for the production of state-selected rare gas ions [2] and for the production of monoenergetic electrons at the 10-1°A level [78]. In conjunction with mass spectrometric ion detection,the ionization scheme can be used for sensitive spectroscopic studies of fine and hyperfine structure even in the least abundant rare gas atoms [5,51].…”

Section: A P P L I C a T I O N Smentioning

confidence: 99%

“…Reactions of metastable rare gas atoms Rg* with photons, electrons, atoms, molecules, and surfaces are ac-* Dedicated to Prof. Dr. Wilhelm Hanle on the occasion of his 90th birthday "~" Present address: Fysisk Laboratorium, H.C. Orsted Institutet, DK-2100 Copenhagen, Denmark *'~ Permanent address: Joint Institute for Laboratory Astrophysics, University of Colorado, Boulder, 80309-0440, USA tively studied by molecular beam techniques [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, Dunning et al [26] have demonstrated a laser photoionization method, involving pulsed lasers and gated electron detection with multipliers. Based on our previous work on resonant two-photon cw laser photoionization of the heavier rare gas atoms Rg*(ms 3p2.0), especially of Ne* (3s 3P2) via the Ne* (3p 3D3) intermediate level [2,3], we have developed an accurate method to measure ?, and thereby the absolute flux of metastable rare gas atom beams.…”

Section: Introductionmentioning

confidence: 99%

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Absolute detection of metastable rare gas atoms by a cw laser photoionization method

Schohl

Klar

Kraft

et al. 1991

Z Phys D - Atoms, Molecules and Clusters

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Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Abstract. A novel, accurate method tbr the absolute detection of metastable rare gas atoms is described and demonstrated. It involves a direct in situ determination of the electron emission coefficient ? for impact of the respective metastable atom on a conducting surface, y is reliably obtained by a cw two-photon ionization -depletion technique: the reduction A I s in electron current from the detector surface due to efficient photoionization removal of the metastable flux is compared with the photoelectron current A I p ( y = A I s / A I e ) . The principle of the method, possible realization schemes for the different metastable rare gas atoms and the apparatus are described in detail. The method has been applied so far to metastable Ne* (3s 3P2), Ar* (4s 3P2), and Kr* (5s 3P2) atoms, and corresponding results for y, obtained with five different chemically clean, polycrystalline surface materials and at two surface temperatures (300 K, 360 K) are reported. Whereas for Ne*, the value of y (~0.35) showed only a rather weak dependence on the surface material and temperature (as also found for a mixed He* (23S, 21S) beam), strong variations in ?, especially at 300 K, were detected for Ar* and Kr* (values between 0.25 and 0.003). Some applications of the described method, especially with regard to the determination of absolute reaction cross sections involving metastable rare gas atoms, are discussed.

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The Role of Electron Spin in Atomic Collisions

Jitschin

1985

Fundamental Processes in Atomic Collision Physics

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Photoionisation of Ne(2p⁵3p³D₃) atoms and the production of state-selected, polarised Ne⁺(2p^{5 2}P_3/2) ions

Cited by 24 publications

References 15 publications

Attachment of Electrons to Molecules at meV Resolution

Attachment of Electrons to Molecules at meV Resolution

Absolute detection of metastable rare gas atoms by a cw laser photoionization method

The Role of Electron Spin in Atomic Collisions

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