DOI: 10.1098/rspa.1961.0205. A measurement of the ionization cross-section of helium ions by electron impact

A measurement of the ionization cross-section of helium ions by electron impact

10.1098/rspa.1961.0205

Crossref journal-article

The Royal Society

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences (175)

Abstract

An apparatus, based on the crossed-beam principle, is described for measuring the ionization cross-section of ions by electron impact. The cross-section for the reaction He + + e → He 2+ + 2 e is determined from the threshold at 54.4 to 1000 eV. The results are compared with the ionization cross-section of atomic hydrogen and with theory. The He + cross-section, when scaled by the appropriate factor, is very similar to that of atomic hydrogen but increases more rapidly in the neighbourhood of the threshold. At the highest electron energies the cross-section agrees well with that predicted by the Coulomb-Born approximation but is considerably lower at the cross-section maximum. For electron energies above 150 eV the error in the measurement is estimated to be less than ± 10% .

Bibliography

A measurement of the ionization cross-section of helium ions by electron impact. (1961). Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 264(1318), 367â378.

Authors 0

None

References 15 Referenced 99

A cto n F . S. 1959 A n a Iysis
B urgess A. i960
E Iw e rt G. 1952 o fstraight line data. N ew Y o rk : J o h n W iley a n d Sons In c .
Astrophys.J . 132 503.
Z .N aturw. 7a 432.
{'key': 'p_6', 'first-page': '1141', 'article-title': 'P hys', 'volume': '112', 'year': '1958', 'journal-title': 'Rev.'} / Rev. / P hys (1958)
{'key': 'p_7', 'first-page': '374', 'article-title': 'P hys', 'volume': '115', 'year': '1959', 'journal-title': 'Rev.'} / Rev. / P hys (1959)
{'key': 'p_8', 'first-page': '437', 'article-title': 'A ust. J . Sci', 'volume': '4', 'year': '1951', 'journal-title': 'Res.'} / Res. / A ust. J . Sci (1951)
10.1103/PhysRev.113.1670
M assey H . S. W . 1956 Encyclopedia of physics 36 401. B erlin : Springer-V erlag. (10.1093/ptj/36.6.401)
{'key': 'p_11', 'first-page': '228', 'article-title': 'Proc. Roy', 'volume': '124', 'year': '1929', 'journal-title': 'Soc. A'} / Soc. A / Proc. Roy (1929)
{'key': 'p_12', 'first-page': '94', 'article-title': 'Phys', 'volume': '2', 'author': 'Zirin H .', 'year': '1959', 'journal-title': 'Fluids'} / Fluids / Phys by Zirin H . (1959)
{'key': 'p_13', 'first-page': '384', 'article-title': '6 Astrophys', 'volume': '130', 'year': '1959', 'journal-title': 'J .'} / J . / 6 Astrophys (1959)
T h o m son J . J . 1912 P hil. M ag. 23 449. (10.2307/1413428)
{'key': 'p_15', 'first-page': '292', 'article-title': 'M on. Not. R . A str', 'volume': '108', 'author': 'Ilen C. W .', 'year': '1948', 'journal-title': 'Soc.'} / Soc. / M on. Not. R . A str by Ilen C. W . (1948)

Dates

Type	When
Created	18 years, 8 months ago (Dec. 15, 2006, 4:39 p.m.)
Deposited	4 years, 6 months ago (Feb. 20, 2021, 7:33 p.m.)
Indexed	1 month, 4 weeks ago (July 2, 2025, 10:39 a.m.)
Issued	63 years, 9 months ago (Nov. 21, 1961)
Published	63 years, 9 months ago (Nov. 21, 1961)
Published Online	28 years, 8 months ago (Jan. 1, 1997)
Published Print	63 years, 9 months ago (Nov. 21, 1961)

Funders 0

None

BibTeX

@article{1961, volume={264}, ISSN={2053-9169}, url={http://dx.doi.org/10.1098/rspa.1961.0205}, DOI={10.1098/rspa.1961.0205}, number={1318}, journal={Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences}, publisher={The Royal Society}, year={1961}, month=nov, pages={367–378} }

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