Abstract
Hard Cu Kα X-ray radiation was generated with a millijoule and high-repetition-rate Ti: sapphire laser in air, helium or vacuum (2.7-1.3×104 Pa) ambient. The characteristic X-ray was obtained by focusing the 0.06-1.46 mJ/pulse, 100 fs, 1 kHz repetition femtosecond laser onto a solid copper target to a spot 4.8 μm in diameter. The relationship between Kα X-ray conversion efficiency and atmospheric conditions was explained with a simple electron collision model that suggested that the electron mean free path is an important parameter in the generation of ultrafast pulsed X-rays in any ambient condition. We also demonstrated a high-intensity X-ray source working in helium at atmospheric pressure.
| Original language | English |
|---|---|
| Pages (from-to) | 173-179 |
| Number of pages | 7 |
| Journal | Applied Physics B: Lasers and Optics |
| Volume | 99 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Apr 2010 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physics and Astronomy (miscellaneous)
Cite this
Effects of ambient pressure on Cu Kα X-ray radiation with millijoule and high-repetition-rate femtosecond laser. / Hada, Masaki; Matsuo, J.
In: Applied Physics B: Lasers and Optics, Vol. 99, No. 1-2, 04.2010, p. 173-179.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of ambient pressure on Cu Kα X-ray radiation with millijoule and high-repetition-rate femtosecond laser
AU - Hada, Masaki
AU - Matsuo, J.
PY - 2010/4
Y1 - 2010/4
N2 - Hard Cu Kα X-ray radiation was generated with a millijoule and high-repetition-rate Ti: sapphire laser in air, helium or vacuum (2.7-1.3×104 Pa) ambient. The characteristic X-ray was obtained by focusing the 0.06-1.46 mJ/pulse, 100 fs, 1 kHz repetition femtosecond laser onto a solid copper target to a spot 4.8 μm in diameter. The relationship between Kα X-ray conversion efficiency and atmospheric conditions was explained with a simple electron collision model that suggested that the electron mean free path is an important parameter in the generation of ultrafast pulsed X-rays in any ambient condition. We also demonstrated a high-intensity X-ray source working in helium at atmospheric pressure.
AB - Hard Cu Kα X-ray radiation was generated with a millijoule and high-repetition-rate Ti: sapphire laser in air, helium or vacuum (2.7-1.3×104 Pa) ambient. The characteristic X-ray was obtained by focusing the 0.06-1.46 mJ/pulse, 100 fs, 1 kHz repetition femtosecond laser onto a solid copper target to a spot 4.8 μm in diameter. The relationship between Kα X-ray conversion efficiency and atmospheric conditions was explained with a simple electron collision model that suggested that the electron mean free path is an important parameter in the generation of ultrafast pulsed X-rays in any ambient condition. We also demonstrated a high-intensity X-ray source working in helium at atmospheric pressure.
UR - http://www.scopus.com/inward/record.url?scp=77951767805&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77951767805&partnerID=8YFLogxK
U2 - 10.1007/s00340-010-3902-4
DO - 10.1007/s00340-010-3902-4
M3 - Article
AN - SCOPUS:77951767805
VL - 99
SP - 173
EP - 179
JO - Applied Physics B: Lasers and Optics
JF - Applied Physics B: Lasers and Optics
SN - 0946-2171
IS - 1-2
ER -