Nondimensional base input magnitude [U.sub.mag] = 10 and pulse length
[T.sub.p] = T.
Therefore, it is assumed that pulse length
and resulting temporal plasma properties during pulse-on-time, like ion-to-neutral ratio and metal ion energy, are the most influencing parameters.
TABLE 1: The relationships between the pulse length
of high power and LID of components.
When the [sup.1]H pulse length
corresponds to a flip angle of 90[degrees], a null in the detected signal can be observed.
Of course, R([tau]) depends on the bandwidth b, on the pulse length
T, and on the rms phase fluctuation [sigma].
The morphological changes induced by picosecond laser on the stainless steel 304 target primarily have shown their dependence on the laser fluence and the number of accumulated pulses, and they are also affected by other factors, such as laser beam characteristics (wavelength, pulse length
) and laser irradiation environment (in air atmosphere or in vacuum).
The NIF laser packs more energy overall, but since peak power is a function of both average power and pulse length
, BELLA took the crown with shorter pulses lasting just 40 quadrillionths of a second.
The terms "short pulse" and "ultrashort pulse" are a bit general--typically 200 picoseconds down to femtosecond level durations--but when the pulse length
becomes this short, material removal becomes a function of vaporization or sublimation rather than absorption.
Sukchushin, "High-power sources of ultrawideband radiation with subnanosecond pulse length
," 14th International Symposium on High Currents Electronics, Tomsk, Russia, Sep.
The higher frequency system inherently is the most accurate due to a narrow beam width, shorter pulse length
and wavelength provided.
Conduction energy losses for the given pulse length
The values of both quantities depend on the pulse length
, waveform and spectral nature.