Fragmentation pattern coefficient table

This table below shows the low molecular pattern coefficient often observed in thermal desorption experiments.
The pattern coefficient may slightly differ between indivisual devices.
Please note that all values shown here are average values at the ionization voltage of 70eV.

Mass number	H₂	He	CH₄	NH₃	H₂O	HF	C₂H₂	CO	N₂	C₂H₄	C₂H₆	NO	CH₃OH	O₂	HCl	Ar	CO₂	C₃H₈	N₂O	C₂H₅OH
1	3.0
2	100.0
4		100.0
12			2.4				2.5	4.5		2.1							6.0
13			7.7				5.6			3.5
14			15.6	2.2					7.2	6.3	3.4	7.5						25.0	12.9
15			85.8	7.5							4.6	2.4						39.0
16			100.0	80.0	1.1							1.5		11.4			8.5		5.0
17			1.2	100.0	23.0
18					100.0								1.9							5.5
19						5.0														2.3
20						100.0										20.0
21
22																	1.2
23
24							5.6			3.7
25							20.1			11.7	4.2
26							100.0			62.3	23.0							76.0		8.3
27							2.8			64.8	33.3							37.9		23.9
Mass number	H₂	He	CH₄	NH₃	H₂O	HF	C₂H₂	CO	N₂	C₂H₄	C₂H₆	NO	CH₃OH	O₂	HCl	Ar	CO₂	C₃H₈	N₂O	C₂H₅OH
28								100.0	100.0	100.0	100.0		6.4				11.4	59.1	10.8	6.9
29								1.1			21.7		64.7					100.0		23.4
30											26.2	100.0						2.1		6.0
31													100.0							100.0
32													66.7	100.0						1.4
33													1.0
35															17.0
36															100.0
37															5.4			3.1
38															32.4			4.9
39																		16.2
40																100.0		2.8
41																		12.4
42																		5.1
43																		22.3
44																	100.0	26.2	100.0
45																	1.3			34.4
46																				16.5
Mass number	H₂	He	CH₄	NH₃	H₂O	HF	C₂H₂	CO	N₂	C₂H₄	C₂H₆	NO	CH₃OH	O₂	HCl	Ar	CO₂	C₃H₈	N₂O	C₂H₅OH

Fragmentation pattern coefficient table - ESCO, Ltd.

Fragmentation pattern coefficient table

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