Plasma formation thresholds of solid targets irradiated with laser pulses of {approx}10{sup -12} and {approx}10{sup -10} s duration (wavelength {lambda}=1.06 {mu}m)

Journal Article · Tue Jun 30 04:00:00 EDT 1998 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE1998V028N06ABEH001266· OSTI ID:21439437

Fedyushin, B T ^[1]; Golovin, A F ^[2]; Matafonov, A P; Belyaev, V S ^[3]

---

1. 'Astrofizika' Research and Production Association (Russian Federation)
2. V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Moscow (Russian Federation)
3. Central Research Institute of Mashine Building, Korolev, Moscow region (Russian Federation)

The plasma formation thresholds were determined for metal (Al, Cu) and dielectric (K8 glass, KV quartz) targets irradiated with laser pulses ({lambda}=1.06 {mu}m, {tau}=10{sup -12} and {approx}10{sup -10} s). It was found that the lowest surface energy density {epsilon}{sub *} needed to form a plasma decreased by two orders of magnitude, compared with the case of interaction of radiation characterised by the parameters {lambda}=10.6 {mu}m and {tau} {approx}10{sup -6} s. An analysis of the results indicated that the 'short' thermal model of plasma initiation remains valid in the {tau} {approx}10{sup -12}-10{sup -10} s range of durations. (interaction of laser radiation with matter. laser plasma)

• OSTI ID: 21439437
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 6 Vol. 28; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM
COPPER
DIELECTRIC MATERIALS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY
ENERGY DENSITY
FREE ENERGY
GLASS
LASER RADIATION
LASER TARGETS
MATERIALS
METALS
MINERALS
OXIDE MINERALS
PHYSICAL PROPERTIES
PLASMA
PULSES
QUARTZ
RADIATIONS
SURFACE ENERGY
SURFACE PROPERTIES
TARGETS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
WAVELENGTHS