Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dose rate effects in radiation-induced changes to phenyl-based polymeric
  scintillators   Results on the effects of ionizing radiation on the signal produced by
plastic scintillating rods manufactured by Eljen Technology company are
presented for various matrix materials, dopant concentrations, fluors (EJ-200
and EJ-260), anti-oxidant concentrations, scintillator thickness, doses, and
dose rates. The light output before and after irradiation is measured using an
alpha source and a photomultiplier tube, and the light transmission by a
spectrophotometer. Assuming an exponential decrease in the light output with
dose, the change in light output is quantified using the exponential dose
constant $D$. The $D$ values are similar for primary and secondary doping
concentrations of 1 and 2 times, and for antioxidant concentrations of 0, 1,
and 2 times, the default manufacturer's concentration. The $D$ value depends
approximately linearly on the logarithm of the dose rate for dose rates between
2.2 Gy/hr and 70 Gy/hr for all materials. For EJ-200 polyvinyltoluene-based
(PVT) scintillator, the dose constant is approximately linear in the logarithm
of the dose rate up to 3400 Gy/hr, while for polystyrene-based (PS)
scintillator or for both materials with EJ-260 fluors, it remains constant or
decreases (depending on doping concentration) above about 100 Gy/hr. The
results from rods of varying thickness and from the different fluors suggest
damage to the initial light output is a larger effect than color center
formation for scintillator thickness $\leq1$ cm. For the blue scintillator
(EJ-200), the transmission measurements indicate damage to the fluors. We also
find that while PVT is more resistant to radiation damage than PS at dose rates
higher than about 100 Gy/hr for EJ-200 fluors, they show similar damage at
lower dose rates and for EJ-260 fluors.

29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph