The partial cross sections for the production of noble‐gas ions in their various charge states were determined for He, Ne, Ar, and Kr bombarded by protons in the energy range from 0.8 to 3.75 MeV. The slow ions formed in the collisions of the swiftly moving hydrogen ions with the isolated noble‐gas atoms were extracted in a direction at right angles to the proton beam. Their charge and intensity were analyzed by means of a portable mass spectrometer with special constructional features. These data were combined with values of the total ionization cross sections determined by Hooper et al. to evaluate the partial cross section for the formation of each species. The cross sections are compared with those previously obtained by others for proton projectiles with energies between 5 and 180 keV.

1.
See the review of
J. B.
Hasted
,
Advan. Elec. Electron Phys.
13
,
31
(
1960
).
Google Scholar
 
2.
J. W.
 
Hooper
,
E. W.
 
McDaniel
,
D. W.
 
Martin
, and
D. S.
 
Harmer
,
Phys. Rev.
 
121
,
1123
(
1961
);
Google Scholar
Crossref
Search ADS
 
J. W.
Hooper
,
E. W.
McDaniel
,
D. W.
Martin
, and
D. S.
Harmer
,
125
,
2000
(
1962
).,
Phys. Rev.
Google Scholar
Crossref
Search ADS
 
3.
C. F.
Barnett
 and
H. K.
Reynolds
,
Phys. Rev.
109
,
355
(
1958
).
Google Scholar
Crossref
Search ADS
 
4.
P. M.
Stier
 and
C. F.
Barnett
,
Phys. Rev.
103
,
896
(
1956
).
Google Scholar
Crossref
Search ADS
 
5.
R. F.
 
Post
,
Rev. Mod. Phys.
 
28
,
338
(
1956
);
Google Scholar
Crossref
Search ADS
 
K.
Bockasten
,
R.
Hallin
,
S. I.
Herlitz
,
L.
Högberg
,
N. R.
Nilsson
,
S.
Svennerstedt
, and
K.
Vogel
, (
Intern. At. Energy Agency, Tech. Report. Ser.
17
, (
1961
)).
Google Scholar
 
6.
R. L.
 
Platzman
,
Intern. J. Appl. Radiation and Isotopes
 
10
,
116
(
1961
);
Google Scholar
Crossref
Search ADS
 
H. A. Bethe and J. Ashkin, Experimental Nuclear Physics, edited by E. Segre (John Wiley & Sons, Inc., New York, 1953), Vol. 1, p. 166.
7.
R.
 
Wolfgang
,
J. Chem. Phys.
 
39
,
2983
(
1963
) and earlier papers;
Google Scholar
Crossref
Search ADS
 
F. S. Rowland, J. K. Lee, B. Musgrave, and R. M. White, Proceedings of the Symposium on Chemical Effects of Nuclear Transformations, Prague, Czechoslovakia (International Atomic Energy Agency, Vienna, 1961), Vol. II, p. 67.
8.
A. B.
 
Meinel
,
Astrophys. J.
 
113
,
50
(
1951
);
Google Scholar
Crossref
Search ADS
 
C. V.
Fan
 and
A. B.
Meinel
,
Astrophys. J.
118
,
205
(
1953
).,
Astrophys. J.
Google Scholar
Crossref
Search ADS
 
9.
V. V.
 
Afrosimov
 and
N. V.
 
Fedorenko
,
Soviet Phys.‐Tech. Phys.
 
2
,
2378
,
2391
(
1957
)
Google Scholar
 
[
V. V.
Afrosimov
 and
N. V.
Fedorenko
,
Zh. Techn. Fiz.
27
,
2557
,
2573
(
1957
)].
Google Scholar
 
10.
N. V.
 
Fedorenko
 and
V. V.
 
Afrosimov
,
Soviet Phys.‐Tech. Phys.
 
1
,
1872
(
1957
)
Google Scholar
 
[
N. V.
 
Fedorenko
 and
V. V.
 
Afrosimov
,
Zh. Tech. Fiz.
 
26
,
1941
(
1956
)];
Google Scholar
 
N. V. Fedorenko, V. V. Afrosimov, and D. M. Kaminker, ibid., p. 1861
[ibid., p. 1929];
N. V.
 
Fedorenko
,
V. V.
 
Afrosimov
, and
R. N.
 
Il’in
,
Soviet Phys.‐JETP
 
7
,
968
(
1958
)
Google Scholar
 
[
N. V.
Fedorenko
,
V. V.
Afrosimov
, and
R. N.
Il’in
,
Zh. Eksperim. i Teor. Fiz.
34
,
1398
(
1958
)].
Google Scholar
 
11.
H. B.
 
Gilbody
 and
J. B.
 
Hasted
,
Proc. Roy. Soc. (London)
 
A238
,
334
(
1956
);
Google Scholar
 
H. B.
Gilbody
 and
J. B.
Hasted
,
A240
,
382
(
1957
).,
Proc. R. Soc. London, Ser. A
Google Scholar
 
12.
J. W. Hooper, E. W. McDaniel, D. W. Martin, and D. S. Harmer, Proceedings of the Second International Conference on the Physics of Electronic and Atomic Collisions (W. A. Benjamin, New York, 1962), p. 67.
13.
H.
Bethe
,
Ann. Phys.
5
,
325
(
1930
).
Google Scholar
 
14.
N. F. Mott and H. S. W. Massey, The Theory of Atomic Collisions (Oxford University Press, London, 1949), pp. 191, 271.
15.
R. A.
Mapleton
,
Phys. Rev.
109
,
1166
(
1958
).
Google Scholar
Crossref
Search ADS
 
16.
D. R.
Bates
 and
G.
Griffing
,
Proc. Phys. Soc. (London)
A66
,
961
(
1953
).
Google Scholar
 
17.
E. S.
 
Solov’ev
,
R. N.
 
Il’in
,
V. A.
 
Oparin
, and
N. V.
 
Fedorenko
,
Soviet Phys.‐JETP
 
15
,
459
(
1962
)
Google Scholar
 
[
E. S.
Solov’ev
,
R. N.
Il’in
,
V. A.
Oparin
, and
N. V.
Fedorenko
,
Zh. Eksperim. i Teor. Fiz.
42
,
659
(
1962
)].
Google Scholar
 
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