scholarly journals FILAMENT LIFE IN LOW PRESSURE ARC TYPE ION SOURCE

1954 ◽  
Author(s):  
O. C. Yonts
Keyword(s):  
1986 ◽  
Vol 39 (12) ◽  
pp. 2161 ◽  
Author(s):  
RG Gillis

Under positive ion chemical ionization conditions, with ammonia as reagent gas at relatively low pressure, N-oxides, sulfoxides and sulfones form clusters with a proton and one or more ammonia molecules; these clusters can be represented as [M+H]+, [M+NH4]+, [M+N2H7]+, [2M+H]+ and [2M+NH4]+. The unimolecular decomposition of the clusters can be followed by the accompanying metastable peaks.


2003 ◽  
Vol 70 (1) ◽  
pp. 51
Author(s):  
M. A. Kartasheva ◽  
M. N. Maleshin ◽  
G. N. Gerasimov ◽  
V. I. Danilenkov

2011 ◽  
Vol 29 (3) ◽  
pp. 283-289 ◽  
Author(s):  
X.P. Zhu ◽  
F.G. Zhang ◽  
Y. Tang ◽  
M.K. Lei

AbstractNitrides and/or carbonitrides formation of high efficiency was found on titanium target under irradiation of high-intensity pulsed ion beam (HIPIB) with a few shots at a low pressure of 10−2 Pa order, which is extraordinary in comparison with conventional thermo-chemical diffusion process such as gas nitriding and/or carbonitriding of metals necessarily heated at high temperatures during a processing time of hours. The underlying mechanism of the nitrides and carbonitrides formation on titanium targets was explored by a comparative study on three typical HIPIB sources, i.e., TEMP-6, TEMP-4M, and ETIGO-II, varying the irradiation intensity within several J/cm2 per shot of a 60–70 ns pulse duration and the shot number of similar ion species. It is revealed that ambient gases and ion source material are the main sources providing the nitrogen and carbon species for the phase transformation on titanium target at the low pressures, whereas the ion species of HIPIB composition is negligible at a low implantation dose of 1013–1014 ions/cm2. The adsorbed gaseous species, the deposited layer of the ion source material, and in-situ formed compound top layer from reactions between ablation plasma and the ambient species during HIPIB irradiation, can be effectively incorporated into the irradiated target surfaces under a controlled HIPIB-target interaction.


2008 ◽  
Vol 51 (2) ◽  
pp. 311-314 ◽  
Author(s):  
A. I. Stognii ◽  
A. A. Serov ◽  
S. V. Koryakin ◽  
V. V. Pan’kov

1962 ◽  
Vol 33 (9) ◽  
pp. 905-911 ◽  
Author(s):  
C. E. Carlston ◽  
G. D. Magnuson

2009 ◽  
Vol 56 (1) ◽  
pp. 523-527 ◽  
Author(s):  
Kai Masuda ◽  
Tomoya Nakagawa ◽  
Taiju Kajiwara ◽  
Heishun Zen ◽  
Kiyoshi Yoshikawa ◽  
...  

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