Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An estimate of the inter-system crossing time in light-emitting polymers   The reported enhanced singlet-exciton yields in light-emitting polymers over
the statistical limit of 25% has attracted wide experimental and theoretical
attention. Most theoretical estimates of the singlet-exciton yield depend
crucially on estimates of the inter-system crossing rates induced by spin-orbit
coupling. In this paper we use the experimentally determined phosphorescent
life-time and energy of the lowest-lying triplet state, as well as calculated
values of Huang-Rhys factors to estimate the spin-orbit matrix element and
inter-system crossing time between the lowest-lying singlet and triplet states.

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The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
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The categories of this paper are: cmp-lg
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The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
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The categories of this paper are: mtrl-th
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The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol