Laser triggered Z-pinch broadband extreme ultraviolet source for metrology

Laser triggered Z-pinch broadband extreme ultraviolet source for metrology

Extreme - ultraviolet laser metrology of O I transitions

Some 16 transitions in atomic oxygen originating from its 3P ground state were measured using a tunable narrow-band extreme-ultraviolet laser source, with an unprecedented accuracy of λ/λ= 8× 10−8. The results are relevant for comparisons with spectral absorption features observed in the line of sight of quasars, in order to test a possible variation of the fine-structure constant α on a cosmol...

Extreme ultraviolet frequency comb metrology.

The remarkable precision of frequency-comb (FC) lasers is transferred to the extreme ultraviolet (XUV, wavelengths shorter than 100 nm), a frequency region previously not accessible to these devices. A frequency comb at XUV wavelengths near 51 nm is generated by amplification and coherent up-conversion of a pair of pulses originating from a near-infrared femtosecond FC laser. The phase coherenc...

Generation of Double Pulses in the Extreme Ultraviolet Spectral Range Using a Laser Combined Pinch Plasma Source

The interaction of a dense plasma with short laser pulses (ns) is investigated. The dense plasma is created using a low-current hollow-cathode-triggered discharge. This configuration generates a dense plasma with an electron density of ne 10 17 cm 3 . Spectra are taken in the extreme ultraviolet (EUV) spectral range from11-18 nm to estimate the temperature. The interaction between plasma and la...

High-Yield Z-Pinch Thermonuclear Neutron Source

Introduction: Neutron beams are useful for many applications, from noninvasive imaging and characterization of materials to producing medical isotopes and detecting hidden explosive devices. Some applications require high-energy neutrons created in fusion nuclear reactions between deuterium (D) and tritium (T). To achieve thermal fusion, deuterium or DT plasma must be heated to about 10 8 K, wh...