His experiments to determine the nature of positively charged particles, with Francis William Aston, were the first use of mass spectrometry and led to the development of the mass spectrograph.
12.
As a principal in the " Uranverein ", Kopferman, with a couple of physicists under his direction, investigated and developed isotope separation techniques; their work included the construction of a mass spectrograph.
13.
Early " spectrometry " devices that measured the mass-to-charge ratio of ions were called " mass spectrographs " which consisted of instruments that recorded a spectrum of mass values on a photographic plate.
14.
The question of stable, non-radioactive isotopes was more difficult and required the development by Francis Aston of a high-resolution mass spectrograph, which allowed the separation of different stable isotopes of one and the same element.
15.
He later moves to the Cavendish Laboratory in Cambridge, where he uses a method of electromagnetic focusing to invent the mass spectrograph, which rapidly allows him to identify no fewer than 212 of the 287 naturally occurring isotopes.
16.
From 1943 to 1945, Nier worked with Kellex Corporation in New York City on the design and development of efficient and effective mass spectrographs for use in the Manhattan Project to build the atomic bomb in World War II.
17.
The mass spectrograph was listed as one of twenty-five commissioned nuclear research projects granted between 1 April 1943 and 31 March 1944; the classified list accompanied a letter from Kurt Diebner, Reich Planning Officer, to the president of the " Reichsforschungsrat " ( Reich Research Council ) on 18 April 1944.
18.
The 14 instruments carried on " Nozomi " are an imaging camera, neutral mass spectrometer, dust counter, thermal plasma analyzer, magnetometer, electron and ion spectrum analyzers, ion mass spectrograph, high energy particles experiment, VUV imaging spectrometer, sounder and plasma wave detector, LF wave analyzer, electron temperature probe, and a UV scanner.
19.
The leap between a mass spectrograph detection; the production of this species in volume by kinetic impact; it's subsequent absorption in human lungs; and the potential health impacts of such exposure, is a chain of synthesis and supposition that is not supported by the references given .-- DV8 2XL 00 : 58, 23 February 2006 ( UTC)
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