Emission Spectrochemical Analysis of Fluorine in Biological Samples with a Shock Wave Plasma Induced by a TEA CO&lt;SUP&gt;2&lt;/SUP&gt; Laser

Tani, M.; Mizukami, Kazuo; Ueda, Hiroshi; Deguchi, Yoshihiro; Takagi, Yasuhiro; Kagawa, Keiichiro

doi:10.5111/bunkou.41.265

Bunko Kenkyu

1992

DOI: 10.5111/bunkou.41.265

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Emission Spectrochemical Analysis of Fluorine in Biological Samples with a Shock Wave Plasma Induced by a TEA CO<SUP>2</SUP> Laser

M. Tani¹,

Kazuo Mizukami

Hiroshi Ueda

et al.

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The Role of Sub-Target in the Transversely Excited Atmospheric Pressure CO₂ Laser-Induced Shock-Wave Plasma

Suliyanti¹,

Hedwig²,

Kurniawan³

et al. 1998

Jpn. J. Appl. Phys.

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A transversely excited atmospheric pressure (TEA) CO2 laser pulse (50 mJ, 100 ns) was focused on silicon grease which is painted on a copper plate as a subtarget with a power density of 6 GW/cm2 under reduced pressure. The comparison of the characteristics of the induced laser plasma between two cases, with subtarget and without subtarget was made. It is proved that the emission spectrum assigned to the silicon atom can be detected only for the case with the subtarget. It is also proved that in the absence of the subtarget, the gushing speed of the atom is very low, while for the case with subtarget, the gushing speed of atoms becomes very fast. It is shown that the setting of subtarget is very effective for producing laser-induced shock wave plasma and it is very effective for the realize quantitative analysis of a soft material.

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The Role of Sub-Target in the Transversely Excited Atmospheric Pressure CO₂ Laser-Induced Shock-Wave Plasma

Suliyanti¹,

Hedwig²,

Kurniawan³

et al. 1998

Jpn. J. Appl. Phys.

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TEA CO₂ Laser-Induced Plasma with a Plane Shock Wave Structure

Kagawa¹,

Tani²,

Ueda³

et al. 1993

Appl Spectrosc

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A TEA CO2 laser beam (500 mJ, 100 ns) has been focused on a Zn target at reduced ambient gas pressures. In order to confine the laser plasma into a limited space, a tube (7 × 7 × 20 mm) has been placed just in front of the target, and the laser beam has been focused through the tube on the target. The time-resolved spatial distributions of Zn emission lines show that emission intensity increases quickly with a distinct jump near the front of the plasma and that the emissions take place only in a limited thin layer. It is also shown that the displacement of the emission front is proportional to 0.6 power of time. These experimental results support the supposition that the plasma is excited by a plane shock wave induced by the laser bombardment. This laser plasma confinement technique shows the possibility of improving the sensitivity in laser microprobe spectrochemical analysis.

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Emission Spectrochemical Analysis of Fluorine in Biological Samples with a Shock Wave Plasma Induced by a TEA CO<SUP>2</SUP> Laser

Cited by 2 publications

References 1 publication

The Role of Sub-Target in the Transversely Excited Atmospheric Pressure CO₂ Laser-Induced Shock-Wave Plasma

The Role of Sub-Target in the Transversely Excited Atmospheric Pressure CO₂ Laser-Induced Shock-Wave Plasma

TEA CO₂ Laser-Induced Plasma with a Plane Shock Wave Structure

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Emission Spectrochemical Analysis of Fluorine in Biological Samples with a Shock Wave Plasma Induced by a TEA CO<SUP>2</SUP> Laser

Cited by 2 publications

References 1 publication

The Role of Sub-Target in the Transversely Excited Atmospheric Pressure CO 2 Laser-Induced Shock-Wave Plasma

The Role of Sub-Target in the Transversely Excited Atmospheric Pressure CO 2 Laser-Induced Shock-Wave Plasma

TEA CO2 Laser-Induced Plasma with a Plane Shock Wave Structure

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The Role of Sub-Target in the Transversely Excited Atmospheric Pressure CO₂ Laser-Induced Shock-Wave Plasma

The Role of Sub-Target in the Transversely Excited Atmospheric Pressure CO₂ Laser-Induced Shock-Wave Plasma

TEA CO₂ Laser-Induced Plasma with a Plane Shock Wave Structure