Ion Engine and Propellant Gases

Atom

Boil

Ion

Abnd

Wt

K

kJ/m

ppm

H

1

20

1312

He

4

4.2

2372

|| LiH || 8 || sol || 91+ || || 1400 ||

CH₄

16

112

75+

1330

NH₃

17

240

193+

1376

H₂O

18

373

286+

1455

Ne

20

27

2081

18

Ar

40

87

1521

1.3%

Kr

84

120

1351

1

Xe

131

165

1170

0.09