Electron emission from a metal surface bombarded by slow highly charged ions

Delaunay, M.; Fehringer, M.; Geller, R.; Hitz, D.; Варга, П.; Winter, H.

doi:10.1103/physrevb.35.4232

Cited by 117 publications

(40 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The processes of electron emission have been well studied with atomic ions. The rate of electron emission due to the ion/target interaction for the potential emission γ q,PE decreases with the velocity of the projectile [30][31][32] and the dependence as a function of the charge for a constant velocity follows a simple relation: 26,[33][34][35] …”

Section: Theories Of Electron Emission Under Ion Impactmentioning

confidence: 99%

Secondary Electron Emission Yields from a CsI Surface Under Impacts of Large Molecules at Low Velocities (5 × 103−7 × 104 ms−1)

Brunelle

Chaurand

Della‐Negra

et al. 1997

Rapid Commun. Mass Spectrom.

View full text Add to dashboard Cite

The yields of electron emission from a CsI surface bombarded with very heavy molecular ions have been measured by coincidence counting in time-of-flight mass spectrometry. These ions were produced by the matrix-assisted laser desorption/ionization technique. The masses ranged from 700 to 66 000 Da with velocities V between 5 × 10 3 and 7 × 10 4 ms For a few years, the interaction of heavy clusters and molecules with solids has been the subject of welldeveloped research. In these investigations the projectiles have had energies from a few eV/atom to a few MeV/atom. Over this large domain of velocities, the projectiles deposit a large amount of energy near the surface of the target. For masses in the range of 10 000 u to 100 000 u, energies of 10 keV to 2 MeV are deposited in a small volume. The transfer of very high densities of transitory and out-of-equilibrium energy into the solid leads to important modifications of the material and/or to the formation of craters independent of the energy range, the mass of the projectiles and the nature of the bombarded surface.1-5 Crater formation is accompanied by a very high sputter yield, as was first observed by Andersen and Bay. 6 The other de-excitation channels, such as electron and ion emission, have also been studied. The ion emission yield exhibits a non-linear increase as a function of the number of constituents or the mass of the projectile over the velocity range studied.7-10 For electron emission, results are scarce. Fundamentally, the electron emission induced by ions is connected to the ion/electron interaction in the medium. The electron emission processes are not simple, and the experimental results show both linear and non-linear relationships of the electron emission yield as a function of the velocity of the projectiles. 11-13

show abstract

Section: Theories Of Electron Emission Under Ion Impactmentioning

confidence: 99%

Secondary Electron Emission Yields from a CsI Surface Under Impacts of Large Molecules at Low Velocities (5 × 103−7 × 104 ms−1)

Brunelle

Chaurand

Della‐Negra

et al. 1997

Rapid Commun. Mass Spectrom.

View full text Add to dashboard Cite

show abstract

“…The decrease of c PE for ions having higher charge states and impact energies has already been observed by Delaunay et al [12] and Aumayr et al [18] for Ar q+ impact on W and Au surfaces, respectively. Aumayr et al [18] argued that during the course of neutralization, electrons are initially captured into highly excited states, from which Auger transitions with filling of inner shell holes is impossible.…”

Section: Resultsmentioning

confidence: 53%

“…By using coincidence techniques Lemell et al [10] and Stockl et al [11] separated the PE and KE contributions for argon ions impact on Au and LiF surfaces. Besides the separated of PE and KE contributions, Delaunay et al [12] confirmed that most electrons emitted by highly charged ions have low energies and the total electron yields increase linearly with the potential energy of the projectile. In this work, we measured total secondary electron yields induced by highly charged neon and xenon ions on fusion-relevant tungsten and HOPG surfaces.…”

Section: Introductionmentioning

confidence: 92%

Electron emission by highly charged neon and xenon ions on fusion-relevant tungsten and graphite surfaces

Wang

Zhao

Sun

et al. 2011

Nuclear Instruments and Methods in Physics Research Section B:

View full text Add to dashboard Cite

“…We attribute this to the mass and velocity dependence of secondary electron emission from SWAP's thin (∼1 µg/cm 2 ) carbon foil. Secondary electrons are emitted from atoms in a carbon foil either through inelastic collisions between an incident particle and target atom or through indirect processes such as Auger decay or plasmon excitations (see, for example, Delaunay et al 1987;Ritzau and Baragiola 1998). These interactions liberate and energize secondary electrons which then undergo a series of collisions with other electrons.…”

Section: Discussionmentioning

confidence: 99%

A Composition Analysis Tool for the Solar Wind Around Pluto (SWAP) Instrument on New Horizons

et al. 2010

View full text Add to dashboard Cite

We describe the response of the Solar Wind Around Pluto (SWAP) instrument (McComas et al. in Space Sci. Rev. 140:261, 2008) to 1-40 amu ions in order to assess whether it can be used to determine plasma composition. Our goal is to enhance the scientific return on the SWAP plasma measurements obtained during the New Horizons traversal down Jupiter's magnetotail in 2007. We present calibration data for the SWAP flight instrument and another largely flight-like SWAP sensor, dubbed "SWAP-II". SWAP's massdependent response was characterized by analyzing the count ratios from its two channel electron multipliers (CEMs). We observe significant differences in the instrument response between light (mass ≤ He) and heavy (mass > He) ions, especially for energies below ∼4 keV. We attribute these differences to the mass-dependent electron emission yield from SWAP's ultra-thin (∼1 µg/cm 2 ) carbon foil. Using these results, we develop a plasma composition analysis technique to statistically distinguish between light and heavy plasma ions measured by the instrument.

show abstract

Electron emission from a metal surface bombarded by slow highly charged ions

Cited by 117 publications

References 11 publications

Secondary Electron Emission Yields from a CsI Surface Under Impacts of Large Molecules at Low Velocities (5 × 103−7 × 104 ms−1)

Secondary Electron Emission Yields from a CsI Surface Under Impacts of Large Molecules at Low Velocities (5 × 103−7 × 104 ms−1)

Electron emission by highly charged neon and xenon ions on fusion-relevant tungsten and graphite surfaces

A Composition Analysis Tool for the Solar Wind Around Pluto (SWAP) Instrument on New Horizons

Contact Info

Product

Resources

About