TY - JOUR
T1 - Control of d.c. bias current in radio-frequency glow discharge source and its emission characteristics II - the analytical application
AU - Wagatsuma, Kazuaki
N1 - Funding Information:
The author wishes to thank Dr K. Kitagawa for his assistance in the design of the electric circuit. A part of this work was carried out under the Visiting Researcher's Program of the Institute for Materials Research, Tohoku University. This study is in part supported by a grant-in-aid from the Ministry of Education of Japan (No. 09640713).
PY - 2000/7/1
Y1 - 2000/7/1
N2 - In a radio-frequency-powered glow discharge lamp, a d.c. bias current which is driven by the self-bias voltage can be introduced by connecting an electric circuit comprising a low-pass filter and a variable resistor. The bias current promotes the emission excitations occurring in the plasma, thus leading to an improvement of the detection power in the optical emission spectrometry. At a bias current of 33 mA, the emission intensities of the Al I 396.15-nm line were approximately 20 times larger than those obtained with the conventional plasma. In Fe-Al alloy samples, the detection limit for the Al I 396.15-nm line was 1.1 × 10-3 mass% and was improved by a factor of 14, when the r.f. power and the Ar pressure was selected to be 80 W and 330 Pa, respectively.
AB - In a radio-frequency-powered glow discharge lamp, a d.c. bias current which is driven by the self-bias voltage can be introduced by connecting an electric circuit comprising a low-pass filter and a variable resistor. The bias current promotes the emission excitations occurring in the plasma, thus leading to an improvement of the detection power in the optical emission spectrometry. At a bias current of 33 mA, the emission intensities of the Al I 396.15-nm line were approximately 20 times larger than those obtained with the conventional plasma. In Fe-Al alloy samples, the detection limit for the Al I 396.15-nm line was 1.1 × 10-3 mass% and was improved by a factor of 14, when the r.f. power and the Ar pressure was selected to be 80 W and 330 Pa, respectively.
UR - http://www.scopus.com/inward/record.url?scp=0034229996&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0034229996&partnerID=8YFLogxK
U2 - 10.1016/S0584-8547(00)00208-1
DO - 10.1016/S0584-8547(00)00208-1
M3 - Conference article
AN - SCOPUS:0034229996
VL - 55
SP - 833
EP - 838
JO - Spectrochimica Acta - Part B Atomic Spectroscopy
JF - Spectrochimica Acta - Part B Atomic Spectroscopy
SN - 0584-8547
IS - 7
T2 - Colloquium Spectroscopicum Internationale XXXI
Y2 - 5 September 1999 through 10 September 1999
ER -