X-ray photodesorption of complex organic molecules in protoplanetary disks - II. Formic acid, HCOOH

Open Access

Table 1

X-ray photodesorption yields of intact HCOOH and fragments, from an initially deposited pure HCOOH ice.

Species	Yield (molecules photon⁻¹)
CO	7.4 ± 0.2 × 10⁻²
CO₂	3.5 ± 0.2 × 10⁻²
H₂O	6.4 ± 1.0 × 10⁻³
HCOOH	1.5 ± 1.1 × 10⁻³
O₂	1.1 ± 0.5 × 10⁻³
H₂CO	6.6 ± 2.2 × 10⁻⁴

Notes. Yields were derived from an irradiation at 15 K, at 560 eV and for a photon fluence received by the ice (before the measurements) between ~1 × 10¹⁶ and ~3 × 10¹⁶ photons cm⁻². Yields are expressed in molecules desorbed per incident photon (molecules photon⁻¹).

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