Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhanced hard X-ray emission from femtosecond laser irradiated
  microdroplets   We make a comparative study of hard x-ray emission from 15 $\mu$m methanol
microdroplets and a plain slab target of similar atomic composition at similar
laser intensities. The hard X-ray yield from droplet plasmas is $\simeq$ 35
times more than that obtained from solid plasmas. A prepulse that is about 10ns
and about 5% of the main pulse is essential for hard x-ray generation from the
droplets.
  A hot electron temperature of 36 keV is measured from the droplets at
8$\times10^{14}$ W cm$^{-2}$; three times higher intensity is needed to obtain
similar hot electron temperature from solid plasmas with similar composition.
We use 1D PIC simulation to obtain qualitative correlation to the experimental
observations.

10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph