Resonances in the total electron-impact excitation cross section of metastable states of helium near 60 eV
1975 ◽
Vol 8
(11)
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pp. L241-L243
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2011 ◽
Vol 375
(24)
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pp. 2366-2370
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1995 ◽
Vol 12
(10)
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pp. 581-584
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1976 ◽
Vol 64
(11)
◽
pp. 4490-4494
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