In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 36, No. 6R ( 1997-06-01), p. 3504-
Abstract:
Optical emission spectra were measured during laser ablation of graphite at 266 nm and 1064 nm at fluences of 1.7–12.2 J/cm 2 with or without a magnetic field of ∼0.1 T. In the presence of magnetic field, the intensity distribution of C, C + , and C 2+ emission lines varied considerably and some of the emission lines which originated from higher excited states became obscure. In addition, the C 2 Swan band emission appeared, particularly during 1064 nm laser ablation. These changes in emission spectra are explained in terms of the promotion of ionization of C and C + , formation of C 2 , and deexcitation of electronically excited states, resulting from enhanced collisions between ablated species due to cyclotron motions under a magnetic field. We will discuss the formation and excitation of C 2 and C 2+ , and deexcitation of electronically excited C + and C 2+ .
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.36.3504
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1997
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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