Irradiation origin and stability of CO on trans-Neptunian objects - Laboratory constraints and observational evidence from JWST/DiSCo-TNOs

Open Access

Table D.1

Experiments performed for this work, all with H⁺ 30 keV.

Initial ice	Temperature	Thickness	Dose
	(K)	(µm)	(eV/16u)
CO₂	45	11.4 ± 1.5	9±1
CO₂	45	9.4± 1.5	17 ± 3
CO₂	45	~0.3^*	6 to 94
CH₃OH:H₂O
(1:0)	60	2.6 ± 0.7	107 ± 29
(1:0)	45	~0.5^*	22 to 192
(4:1)	60	4.9 ± 0.5	114 ± 26
(1:1)	60	8.6 ± 0.6	59 ± 4
(1:1)	60	1.9 ± 0.1	79 ± 4
(1:1)	35	5.4 ± 0.5	85 ± 8
(1:1)	60	4.5 ± 0.5	112 ± 12
(1:1)	60	2.8 ± 0.5	215 ± 38

^(*) Thin film experiments where the impinging ions pass through the ice. All other experiments are thick film experiments where the impinging ions implant into the ice while it is continuously deposited until reaching the thickness reported here.

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