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By J. D. Waldron (Eds.)

ISBN-10: 0080092101

ISBN-13: 9780080092102

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Extra info for Advances in Mass Spectrometry. Proceedings of a Joint Conference Organised by the Hydrocarbon Research Group, Institute of Petroleum, and A.S.T.M. Committee E.14 and Held in the University of London, 24th–26th September, 1958

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5-950 200 100 100 200 10000 110 110 6-279 204 204 10-182 10182 120 6-628 208 120 208 10-363 130 130 6-996 212 212 10-543 140 7-382 216 7-382 216 10-721 140 150 7-787 7-787 220 150 220 10-896 160 230 230 11-319 8-207 160 170 240 240 11-716 8-643 170 180 180 9-089 250 250 12-074 9-270 260 184 9-270 260 12-385 184 188 270 12-642 188 9-452 9-452 270 192 280 12-832 192 9-635 280 9-817 290 12-954 196 290 196 300 13001 200 200 10000 300 1. 2. 3. 4. 5. REFERENCES ALEKSEEVSKI, N. , et al, Dokl. Akad. Nauk SSSR 100, 229 (1953).

Deflection in the electric and the magnetic field in the opposite sense. (See Table VIIA, NO. 8, and Table VII, No. 10) TABLE VII Mass spectrographs with corrected ^-dependent image defects in one point of the photoplate (B12 = B22 = 0, Bn ^ 0). Deflection in the electric and the magnetic field in the opposite sense No. NO. <¿m m 1 2 3 4 5 5 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 90 90 90 90 90 90 90 90 90 90 90 90 90 90 130 130 150 150 150 150 170 170 190 190 190 190 e' e' e e" " 99 -00 0 0 --45 45 1 5 - 7 3 --45 45 15-73 2010 2 0 - 1 0 --45 45 2 2 - 2 4 --45 45 22-24 0 0 --45 45 9 -00 1 5 - 7 3 --45 45 15-73 2010 2 0 - 1 0 --45 45 22-24 22-24 -45 -45 -51-90 - 5 1 - 9 0 - -25 25 -44-42 - 4 4 - 4 2 --15 15 -32-90 -32-90 --15 15 -23-93 -23-93 -- 55 -24-62 + + 55 -24-62 -24-621 + + 55 rm/R' fm/R' V(2)e e W(2)e\ e 33-00 00 55 55 3 00 65 3-00 3 00 75 3-00 300 ' 85 3 00 '85 55 400 4-00 55 400 4-00 65 75 400 4-00 75 85 400 4-00 85 250 0 0 250 250 0 250 210 --22-00 0 210 210 --44-00 0 210 230 - 2 0 0 230 -2-00 230 --44-00 0 230 38-89 38-89 45-96 45-96 53 03 53-03 6010 60-10 38-89 38-89 45-96 45-96 53 03 53-03 6010 60-10 176-78 176-78 176-78 148-49 148-49 148-49 148-49 162-63 162-63 162-63 d/rmm rPe/fm e\rm 0-743 0-743 I 1-506 1-506 0-652 0-652 1-113 1-113 0-613 0-613 0-799 0-799 0-658 0-658 0-556 0-556 0-501 1-294 1-294 0-478 0-478 0-954 0-954 0-478 0-686 0-686 0-478 0-530 0-530 0-479 0-479 0-374 0-374 0-210 0162 0-404 0-404 0-162 1-973 0-329 1-973 0-329 0-239 1-509 0-239 1-509 0149 1-290 0-149 0-889 0-889 0103 0-103 I'elrm / mffm / effm l"m\rn\ 0-746 0-746 0-367 0-367 0-151 0151 0-034 0034 0-641 0-314 0-314 0130 0-130 0030 0-030 0-054 0054 0104 0-104 0-403 0-403 0-293 0-293 0088 0-088 0-061 0061 0137 0-137 0-220 0-220 0-268 0-268 0-290 0-290 0137 0-137 0-220 0-220 0-268 0-268 0-290 0-290 2 002 2-002 1-904 3139 3-139 2-981 1-658 1-658 1-658 BB11n 2-638 2-638 1-608 1-608 1111 1-111 0-861 0-861 2-777 2-777 1-643 1-643 1120 1-120 0-864 0-864 1-273 1-273 1-442 6-432 6-432 6-627 6-627 2-413 2-413 2-413 mass spectrographs, which, in addition to exhibiting double focusing of first order for all masses in the middle of the photographic plate, focus ion beams with a relatively large energy spread.

For a chosen set of values of the parameters W9 n9 re\rm> e9 d\rm> a value of re/re and of l"m\rm can be found which makes B1= B2= 0, thus resulting in first order double focusing for the median plane. To be physically significant, the distances l'e and l"m should be positive; they can be made positive by suitable choice of the parameters. Substitution of such a physically significant set of values for the parameters W9 n, re\rmy e, d¡rm, together with the values of l'e/re and rm/rm which make B1= B2= 0, into the expressions for Bn, B129 and B22, give the latter coefficients as linear functions of X9 so that elimination of the second order angular aberration (Bn = 0) is possible in a straightforward manner.

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Advances in Mass Spectrometry. Proceedings of a Joint Conference Organised by the Hydrocarbon Research Group, Institute of Petroleum, and A.S.T.M. Committee E.14 and Held in the University of London, 24th–26th September, 1958 by J. D. Waldron (Eds.)


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