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Full set of Notes with Fill-Ins - San Jose State University

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Chem 155 Unit 16 291 <strong>of</strong> 3161.1.69 Time <strong>of</strong> Flight (TOF):Ion kinetic energy E = zV PULSEBut kinetic energy E =½mv 2So, a drift length L gives a the “flight” time t F =L/vSolve for m/Z as a function <strong>of</strong> V PULSE and distance L:E = zV PULSE = ½mv 2 = ½m(L/t F ) 22V PULSE (t F /L) 2 = m/z = (2V/L²) t F2So, one measures ion m/z by measuring the ion’sArrival time at the detector: t FPage 291 <strong>of</strong> 316

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