TY - JOUR
AU - Dewdney, John W.
AB - A mass spectrometer has been designed around simple constituents: the vacuum system is made from copper plumbing parts; electrical leads into the vacuum are via darning needles pushed through rubber stoppers; the filament of the thermal ionization source is from a small light bulb; object and image slits are made from bits of razor blades sandwiched between brass washers. The magnetic field is supplied by a permanent magnet fitted with homemade cylindrical pole pieces (of such a diameter to give second-order direction focusing). A modest vacuum of 10 -4; ; mm Hg; is required. When the instrument is focused (by adjusting the position of the pole pieces) and aligned (by rotating greased rubber stoppers) a resolving power of 50 can be obtained.
TI - Poor Man's Mass Spectrometer
JF - American Journal of Physics
DO - 10.1119/1.1969211
DA - 1963-12-01
UR - https://www.deepdyve.com/lp/american-association-of-physics-teachers/poor-man-s-mass-spectrometer-rA8cz61E2O
SP - 932
EP - 937
VL - 31
IS - 12
DP - DeepDyve
ER -