Molecules can be sputtered also from pure metals: Sputtering of beryllium hydride by fusion plasma-wall interactions

Plasma Physics and Controlled Fusion

Volumn 55, Issue 7, 2013, Pages

  Bjorkas C ^a,b   Borodin, D ^b   Kirschner, A ^b   Janev, R K ^b,c   Nishijima, D ^d   Doerner, R ^d   Nordlund, K ^a  

^a UNIVERSITY OF HELSINKI   (Finland)

^b FORSCHUNGSZENTRUM JÜLICH   (Germany)

^c MACEDONIAN ACADEMY OF SCIENCES AND ARTS   (Macedonia)

^d UNIVERSITY OF CALIFORNIA SAN DIEGO   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

BERYLLIUM HYDRIDES; CHEMICAL SPUTTERING; EXPERIMENTAL OBSERVATION; FIRST-WALL MATERIAL; FUNDAMENTAL MECHANISMS; MOLECULAR DYNAMICS COMPUTER SIMULATIONS; MULTI-SCALE APPROACHES; PLASMA WALL INTERACTION;

BERYLLIUM; COMPUTER SIMULATION; EROSION; FUSION REACTIONS; MOLECULAR DYNAMICS; MOLECULES; PLASMA INTERACTIONS;

MAGNETOPLASMA;

EID: 84879070451     PISSN: 07413335     EISSN: 13616587     Source Type: Journal    
DOI: 10.1088/0741-3335/55/7/074004     Document Type: Article

References (46)

1. Parker R, Janeschitz G, Pacher H D, Post D, Chiocchio S, Federici G and Ladd P ITER Joint Central Team and Home Teams 1997 Plasma-wall interactions in ITER J. Nucl. Mater. 241-243 1-26
2. Roth J et al 2008 Tritium inventory in ITER plasma-facing materials and tritium removal procedures Plasma Phys. Control. Fusion 50 103001
3. Kirschner A, Wienhold P, Phillips V, Coad J P, Huber A and Samm U JET EFDA contributors 2004 Modelling of carbon transport in fusion devices: evidence of enhanced re-erosion of in-situ re-deposited carbon J. Nucl. Mater. 328 62
4. Tokunaga K, Baldwin M J, Doerner R P, Nishijima D, Kurishita H, Fujiwara T, Araki K, Miyamoto Y, Ohno N and Ueda Y 2009 Nanoscale surface morphology of tungsten materials induced by Be-seeded D-He plasma exposure J. Nucl. Mater. 417 528-32
5. Doerner R P, Luckhart S C, Seraydarian R, Sze F C and Whyte D G 1999 Plasma interactions with mixed-material plasma facing components Phys. Scr. T81 35-39
6. Doerner R P 2007 The implications of mixed-material plasma-facing surfaces in ITER J. Nucl. Mater. 363-365 32-40
7. Linsmeier Ch, Luthin J and Goldstrass P 2001 Mixed material formation and erosion J. Nucl. Mater. 290-293 25-32
8. Nishijima D, Baldwin M J, Doerner R P and Yu J H 2011 Sputtering properties of tungsten 'fuzzy' surfaces J. Nucl. Mater. 415 S96-9
9. Hopf C, von Keudell A and Jacob W 2003 Chemical sputtering of hydrocarbon films J. Appl. Phys. 94 2373
10. Vietzke E, Refke A, Phillips V and Hennes M 1997 Energy distributions and yields of sputtered C2 and C3 clusters J. Nucl. Mater. 241-243 810-5
11. Oyarzabal E, Doerner R P, Shimada M and Tynan G R 2008 Carbon atom and cluster sputtering under low-energy noble gas plasma bombardment J. Appl. Phys. 104 043305
12. Stangeby P C, Auciello O and Haasz A A 1983 Chemical sputtering of carbon by sub-eV atomic hydrogen: new results and a critical comparison with previous data relevant to fusion applications J. Vac. Sci. Technol. A 1 1425
13. Krstic P S, Reinhold C O and Stuart S 2007 Chemical sputtering from amorphous carbon under bombardment by deuterium atoms and molecules New J. Phys. 9 209
14. Nishijima D, Doerner R P, Baldwin M J, De Temmerman G and Hollmann E M 2008 Properties of BeD molecules in edge plasma relevant conditions Plasma Phys. Control. Fusion 50 125007
15. Doerner R P, Baldwin M J, Buchenauer D, De Temmerman G and Nishijima D 2009 The role of beryllium deuteride in plasma-beryllium interactions J. Nucl. Mater. 390-391 681-4
16. Duxbury G, Stamp M F and Summers H P 1998 Observations and modelling of diatomic molecular spectra from JET Plasma Phys. Control. Fusion 40 361
17. Wiltner A and Linsmeier Ch 2006 Surface alloying of thin beryllium films on tungsten New J. Phys. 8 181
18. Linsmeier Ch, Ertla K, Roth J, Wiltnera A, Schmida K, Kosta F, Bhattacharyyaa S R, Baldwin M and Doerner R P 2007 Binary beryllium-tungsten mixed materials J. Nucl. Mater. 363-365 1129-37
19. Doerner R P, Baldwin M J and Causey R A 2005 Beryllium-tungsten mixed-material interactions J. Nucl. Mater. 342 63
20. Baluc N 2006 Materials for fusion power reactors Plasma Phys. Control. Fusion 48 B165-77
21. Shimizu R 1986 Preferential sputtering Nucl. Instrum. Methods Phys. Res. B 18 486-98
22. Nishijima D, Baldwin M J, Doerner R P and Seraydarian R 2007 Parametric studies of carbon erosion mitigation dynamics in beryllium seeded deuterium plasmas J. Nucl. Mater. 363 1261-5
23. Eckstein W, Dohmen R, Mutzke A and Schneider R. SDTrimSP: A Monte-Carlo code for calculating collision phenomena in randomized targets, http://edoc.mpg.de/287291
24. Karetta F and Urbassek H M 1992 The dimer sputtering mechanism of Cu(001) at low bombarding energy Appl. Phys. A 55 364
25. Vörtler K, Björkas C and Nordlund K 2011 The effect of plasma impurities on the sputtering of tungsten carbide J. Phys.: Condens. Matter 23 085002
26. Nordlund K, Björkas C, Vörtler K, Meinander A, Lasa A, Mehine M and Krasheninnikov A V 2011 Mechanism of swift chemical sputtering: comparison of Ce/C/W dimer bond breaking Nucl. Instrum. Methods Phys. Rev. B 269 1257-61
27. Salonen E, Nordlund K, Keinonen J and Wu C H 2001 Swift chemical sputtering of amorphous hydrogenated carbon Phys. Rev. B 63 195415
28. Krasheninnikov A V, Nordlund K, Salonen E, Keinone J and Wu C H 2002 Sputtering of amorphous hydrogenated carbon by hypothermal ions as studied by tight-binding molecular dynamics Comput. Mater. Sci. 25 427-34
29. Nordlund K 2006 PARCAS computer code. The main principles of the molecular dynamics algorithms are presented in
30. Nordlund K, Ghaly M, Averback R S, Caturla M, Diaz de la Rubia T and Tarus J 1998 Defect production in collision cascades in elemental semiconductors and FCC metals Phys. Rev. B 57 7556-70
31. Ghaly M, Nordlund K and Averback R S 1999 Molecular dynamics investigations of surface damage produced by keV self-bombardment of solids Phil. Mag. A 79 795
32. Nordlund K 1995 Molecular dynamics simulation of ion ranges in the 1-100 keV energy range Comput. Mater. Sci. 3 448
33. Björkas C, Henriksson K O E, Probst M and Nordlund K 2010 A Be-W interatomic potential J. Phys.: Condens. Matter 22 352206
34. Björkas C, Juslin N, Timko H, Vörtler K, Henriksson K, Nordlund K and Erhart P 2009 Interatomic potentials for the Be-C-H system J. Phys.: Condens. Matter 21 445002
35. Nordlund K, Salonen E, Krasheninnikov A V and Keinonen J 2006 Swift chemical sputtering of covalently bonded materials Pure Appl. Chem. 78 1203-12
36. Björkas C, Vörtler K, Nordlund K, Nishijima D and Doerner R 2009 Chemical sputtering of Be due to D bombardment New J. Phys. 11 123017
37. Okamoto H and Tanner L E 1991 Phase Diagrams of Binary Tungsten Alloys ed S V Nagendra Naidu and P Ramo Rao (Calcutta: Indian Institute of Metals)
38. Goehlich A, Gillmann D and Döbele H F 2000 Angular resolved energy distributions of sputtered atoms at low bombarding energy Nucl. Instrum. Methods Phys. Res. B 164-165 834-9
39. Kirschner A, Philipps V, Winter J and Kögler U 2000 Simulation of the plasma-wall interaction in a tokamak with the Monte Carlo code ERO-TEXTOR Nucl. Fusion 40 989
40. Borodin D et al 2010 Modelling of impurity transport in the linear plasma devices PISCES-B and Pilot-PSI using the Monte-Carlo code ERO Contrib. Plasma Phys. 3-5 432-8
41. ADAS User Manual 2004 version 2.6. http://adas.phys.strath.ac.uk - ref-separator -
42. Björkas C et al 2012 Multiscale modelling of BeD release and transport in PISCES-B Proc. J. Nucl. Mater. accepted
43. + Phys. Rev. A 80 012501
44. Nishijima D, Doerner R P, Baldwin M J and De Temmerman G 2009 Erosion yields of deposited beryllium layers J. Nucl. Mater. 390-391 681
45. Doerner R, Björkas C, Nishijmaa D and Schwarz-Sehnger T 2012 Spectroscopic measurements of Be erosion at JET ILW and interpretation with ERO modelling Proc. J. Nucl. Mater. accepted
46. Borodin D et al 2012 Measurements of gross and net erosion of beryllium Proc. J. Nucl. Mater. accepted