Read e-book online Advances in Mass Spectrometry. Proceedings of a Joint PDF

By J. D. Waldron (Eds.)

ISBN-10: 0080092101

ISBN-13: 9780080092102

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Read or Download 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 PDF

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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

Example text

Z. Naturforsch, 12a, 538, 541 (1957). HINTENBERGER, H. and KÕNIG, L. , Z. Naturforsch, 11a, 1039 (1956). KÕNIG, L. , Z. Naturforsch, 12a, 377 (1957). 12. TASMAN, H. , This volume, p. 36. 13. , WENDE, H. and KÕNIG, L. , Z. Naturforsch, 10a, 605 (1955). (Correction to ref. 9) Z. Naturforsch, 12a, 88 (1957). 14. ROBINSON, C. , Rev. Sci. Instr. 28, 777 (1957). 15. HINTENBERGER, H. and KÕNIG, L. , Nuclear Instruments, 3, 250 (1958). DISCUSSION G. H. PALMER : Professor Hintenberger, these instruments with complete second order focusing are very complicated to calculate and not easy to construct.

HINTENBERGER AND L. A. KONIG FIG. 10. Examples of mass spectrographs with corrected /¡-dependent image defects (B12 = B22 = 0, Bn ^ 0). 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.

A. TASMAN: It is possible to treat the case of oblique entrance'and exit and also that of curved boundaries. * However, with plane boundaries and normal entrance and exit you need a specially profiled s-shaped pole face to produce the second derivative in magnetic field which eliminates the a2 aberration. It might be simpler to use conical pole faces and adapt the curvature of the boundaries and possibly also the angle of entrance and exit in order to eliminate the second order angular aberrations.

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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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