Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: X-ray photons produced from a plasma-cathode electron beam for radiation
  biology applications   A compact low-energy and high-intensity X-ray source for radiation biology
applications is presented. A laser-induced plasma moves inside a 30 kV diode
and produces a beam of 10$^{14}$ electrons at the anode location. An aluminum
foil converts a part of the energy of these electrons into X-ray photons which
are characterized using filtered imaging plates. The dose that would be
deposited by these X-ray photons in C. elegans larvae is calculated from Geant4
simulations. It can be set to a value ranging between 10 $\mu$Gy and 10 mGy per
laser shot by simply changing the aluminum foil thickness and the diode
voltage. Therefore, this versatile and compact X-ray source opens a new path to
explore the radiation effects induced by dose rates varying over several orders
of magnitude.

13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th