Ion Beam Surface Interaction at Grazing Incidence

Andrä, H. J.; Fröhling, R.; Plöhn, H. J.; Winter, H.; Wittmann, W.

doi:10.1051/jphyscol:1979159

Cited by 10 publications

(9 citation statements)

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“…Figures 13 and 14 indicate some of these results. Further measurements in improved vacua have shown some depen dences, particularly of the produced orientation, on the smoothness and cleanliness of the surface (Talk et al 1977, Andra et al 1979. Measurements made with clean, single crystals also stress the surface character of the interaction and compare in more detail the tilted-surface and tilted-foil excitations (Talk et al 1979(Talk et al , 1981.…”

Section: Polarized Light From Thin Foil Excitationmentioning

confidence: 93%

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Beam-Foil Spectroscopy

Berry¹,

Hass²

1982

Annu. Rev. Nucl. Part. Sci.

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Section: Polarized Light From Thin Foil Excitationmentioning

confidence: 93%

“…Time-averaged production of a nuclear spin-polarized ion beam and its use for a hfs-quantum beat measurement(Andra et al 1979). Annu.…”

mentioning

confidence: 99%

Beam-Foil Spectroscopy

Berry¹,

Hass²

1982

Annu. Rev. Nucl. Part. Sci.

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“…The atomic polarization is proportional to the nuclear polarization and the relation is known, if the atomic transition is identified. 8,9 The atomic polarization causes circular polarization of the deexcitation lights, i.e., fluorescences. The nuclear polarization thus can be measured through the circular polarization of the fluorescence.…”

Section: Introductionmentioning

confidence: 99%

High precision polarimeter system for atomic polarization and tilted-foil experiments with 1.7 keV/amu N+14 beam

Shimizu

Doumoto

Tanimoto

et al. 2000

Review of Scientific Instruments

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A high precision atomic polarimeter system for the use in beam-foil spectroscopy experiments with a few keV/amu heavy-ion beams has been developed. The polarimeter measures the circular polarization of fluorescences from the beam ion in-flight after the beam–foil interaction. The present system has two identical such polarimeters in both sides of the beam axis to reduce the systematic errors such due to the fluctuations of beam current, background and so on. A successful use of an ultrathin carbon foil (1.5 μg/cm2), which was durable for several hours against a few hundred nA beam irradiation, enabled the beam–foil experiments with such low energy heavy-ion beams. A performance test of the polarimeter system was carried out in the tilted foil experiments with a 1.7 keV/amu N+14 beam. The atomic polarization was observed for the transition 1s22s22p3p 1D→1s22s22p3p 1P, whose fluorescence wavelength is 399.5 nm, in the N+ ion (N II). The polarization was approximately −2% for the tilt angle of −40° and showed monotone increasing with increasing tilt angle up to +2% for +40°. The polarization at 0° was (0.002±0.25)%, which is highly consistent with the expected polarization of 0%. This result indicates the high reliability of the present polarimeter system. This is the first tilted-foil experiment at such low beam energy. The present experimental technique will be very useful for studies of the polarization mechanism of the beam–foil interaction.

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“…1,2 Very little of this has been applied in surface science to study properties of single crystal surfaces. [3][4][5][6][7] The high surface sensitivity down to alkali coverages of 10 Ϫ4 of a monolayer is achieved by adsorbing highly nuclear spin polarized atoms 8 and by detecting the nuclear polarization of thermally desorbed atoms or ions by laser induced fluorescence 9 or beam foil spectroscopy, 10 respectively. 10 16 -10 19 nuclei in the same chemical environment are required in conventional magnetic spectrometers.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of β-radioactive 8Li on single crystal surfaces: Thermal desorption spectroscopy and nuclear magnetic resonance experiments

Detje

Röckelein

Preyß

et al. 1995

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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A new goniometer design for singlecrystal nuclear magnetic resonance spectroscopy Rev.The observation of onephonon assisted selective desorption and adsorption of He atoms in defined vibrational levels on a LiF (001) single crystal surface Experiments with ␤-radioactive 8 Li atoms adsorbed on clean and oxygen covered W͑110͒ and Ru͑0001͒ surfaces are presented. The detection of the decay electrons allows experiments with adsorbates at extremely low coverages ͑10 Ϫ5 monolayers͒. Nuclear spin relaxation and nuclear magnetic resonance experiments are described beside radiation detected thermal desorption spectroscopy ͑TDS͒, a new version of TDS experiments.

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Ion Beam Surface Interaction at Grazing Incidence

Cited by 10 publications

References 0 publications

Beam-Foil Spectroscopy

Beam-Foil Spectroscopy

High precision polarimeter system for atomic polarization and tilted-foil experiments with 1.7 keV/amu N+14 beam

Adsorption of β-radioactive 8Li on single crystal surfaces: Thermal desorption spectroscopy and nuclear magnetic resonance experiments

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