共 11 条
[2]
CROSS SECTIONS FOR DE-EXCITATION OF HELIUM METASTABLE ATOMS BY COLLISIONS WITH ATOMS
[J].
PHYSICAL REVIEW,
1962, 128 (01)
:206-&
[4]
HELIUM, AN IMPORTANT CONSTITUENT IN LOWER EXOSPHERE
[J].
JOURNAL OF GEOPHYSICAL RESEARCH,
1961, 66 (07)
:2263-&
[5]
NEUTRAL COMPOSITION OF ATMOSPHERE IN 100- TO 200-KILOMETER RANGE
[J].
JOURNAL OF GEOPHYSICAL RESEARCH,
1964, 69 (05)
:979-&
[6]
SAYERS J, 1964, EDINBURG C
[10]
DIRECT MEASUREMENTS OF HELIUM AND HYDROGEN ION CONCENTRATION AND TOTAL ION DENSITY TO AN ALTITUDE OF 940 KILOMETERS
[J].
JOURNAL OF GEOPHYSICAL RESEARCH,
1963, 68 (19)
:5339-+

