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Table 1

13CH4 photodesorption yields per incident photon for pure CH4 ice in various interstellar environments.

Dense coresa Protoplanetary ISRFc
(×10-3 molecules/photon)

Pure CH4 2.2 ± 1.1 2.2 ± 1.1 2.0 ± 1.0

Notes. UV fields are taken from and

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