Enhanced negative ion yields on diamond surfaces at elevated temperatures

P. Kumar, A. Ahmad, C. Pardanaud, M. Carrère, J.M. Layet, G. Cartry, F. Silva, A. Gicquel, R.A.H. Engeln

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Uittreksel

Boron-doped polycrystalline diamond (BDD) and highly oriented pyrolytic graphite (HOPG) surfaces were exposed to low pressure hydrogen plasma. The relative yields of surface-produced H- ions were measured by an energy analyser quadrupole mass spectrometer. The highest H- yield was obtained at 400 °C for a BDD surface and at room temperature for an HOPG surface. At low ion bombardment energy, the maximum yield on a BDD surface is about 5 times higher than that on an HOPG surface, which has been the best carbon material so far for surface production of H- ions in caesium-free plasma. Raman measurements revealed surface modifications after plasma exposure.
Originele taal-2Engels
Artikelnummer372002
Pagina's (van-tot)372002-1/4
TijdschriftJournal of Physics D: Applied Physics
Volume44
Nummer van het tijdschrift37
DOI's
StatusGepubliceerd - 2011

Vingerafdruk

Diamond
negative ions
Diamonds
Negative ions
diamonds
Boron
Graphite
pyrolytic graphite
Temperature
boron
temperature
Plasmas
Ions
Hydrogen
Cesium
ions
Mass spectrometers
Ion bombardment
hydrogen plasma
Surface treatment

Citeer dit

Kumar, P. ; Ahmad, A. ; Pardanaud, C. ; Carrère, M. ; Layet, J.M. ; Cartry, G. ; Silva, F. ; Gicquel, A. ; Engeln, R.A.H. / Enhanced negative ion yields on diamond surfaces at elevated temperatures. In: Journal of Physics D: Applied Physics. 2011 ; Vol. 44, Nr. 37. blz. 372002-1/4.
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title = "Enhanced negative ion yields on diamond surfaces at elevated temperatures",
abstract = "Boron-doped polycrystalline diamond (BDD) and highly oriented pyrolytic graphite (HOPG) surfaces were exposed to low pressure hydrogen plasma. The relative yields of surface-produced H- ions were measured by an energy analyser quadrupole mass spectrometer. The highest H- yield was obtained at 400 °C for a BDD surface and at room temperature for an HOPG surface. At low ion bombardment energy, the maximum yield on a BDD surface is about 5 times higher than that on an HOPG surface, which has been the best carbon material so far for surface production of H- ions in caesium-free plasma. Raman measurements revealed surface modifications after plasma exposure.",
author = "P. Kumar and A. Ahmad and C. Pardanaud and M. Carr{\`e}re and J.M. Layet and G. Cartry and F. Silva and A. Gicquel and R.A.H. Engeln",
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Kumar, P, Ahmad, A, Pardanaud, C, Carrère, M, Layet, JM, Cartry, G, Silva, F, Gicquel, A & Engeln, RAH 2011, 'Enhanced negative ion yields on diamond surfaces at elevated temperatures', Journal of Physics D: Applied Physics, vol. 44, nr. 37, 372002, blz. 372002-1/4. https://doi.org/10.1088/0022-3727/44/37/372002

Enhanced negative ion yields on diamond surfaces at elevated temperatures. / Kumar, P.; Ahmad, A.; Pardanaud, C.; Carrère, M.; Layet, J.M.; Cartry, G.; Silva, F.; Gicquel, A.; Engeln, R.A.H.

In: Journal of Physics D: Applied Physics, Vol. 44, Nr. 37, 372002, 2011, blz. 372002-1/4.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

TY - JOUR

T1 - Enhanced negative ion yields on diamond surfaces at elevated temperatures

AU - Kumar, P.

AU - Ahmad, A.

AU - Pardanaud, C.

AU - Carrère, M.

AU - Layet, J.M.

AU - Cartry, G.

AU - Silva, F.

AU - Gicquel, A.

AU - Engeln, R.A.H.

PY - 2011

Y1 - 2011

N2 - Boron-doped polycrystalline diamond (BDD) and highly oriented pyrolytic graphite (HOPG) surfaces were exposed to low pressure hydrogen plasma. The relative yields of surface-produced H- ions were measured by an energy analyser quadrupole mass spectrometer. The highest H- yield was obtained at 400 °C for a BDD surface and at room temperature for an HOPG surface. At low ion bombardment energy, the maximum yield on a BDD surface is about 5 times higher than that on an HOPG surface, which has been the best carbon material so far for surface production of H- ions in caesium-free plasma. Raman measurements revealed surface modifications after plasma exposure.

AB - Boron-doped polycrystalline diamond (BDD) and highly oriented pyrolytic graphite (HOPG) surfaces were exposed to low pressure hydrogen plasma. The relative yields of surface-produced H- ions were measured by an energy analyser quadrupole mass spectrometer. The highest H- yield was obtained at 400 °C for a BDD surface and at room temperature for an HOPG surface. At low ion bombardment energy, the maximum yield on a BDD surface is about 5 times higher than that on an HOPG surface, which has been the best carbon material so far for surface production of H- ions in caesium-free plasma. Raman measurements revealed surface modifications after plasma exposure.

U2 - 10.1088/0022-3727/44/37/372002

DO - 10.1088/0022-3727/44/37/372002

M3 - Article

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SP - 372002-1/4

JO - Journal of Physics D: Applied Physics

JF - Journal of Physics D: Applied Physics

SN - 0022-3727

IS - 37

M1 - 372002

ER -

Kumar P, Ahmad A, Pardanaud C, Carrère M, Layet JM, Cartry G et al. Enhanced negative ion yields on diamond surfaces at elevated temperatures. Journal of Physics D: Applied Physics. 2011;44(37):372002-1/4. 372002. https://doi.org/10.1088/0022-3727/44/37/372002