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Thermally assisted collision-induced dissociation in a quadrupole ion trap mass spectrometer. | LitMetric
Thermally assisted collision-induced dissociation (TA-CID) provides increased dissociation in comparison with CID performed at ambient temperature in a quadrupole ion trap mass spectrometer. Heating the bath/collision gas during CID increases the initial internal energy of the ions and reduces the collisional cooling rate. Thus, using the same CID parameters, the parent ion can be activated to higher levels of internal energy, increasing the efficiency of dissociation and the number of dissociation pathways. The increase in the number of dissociation pathways can provide additional structural information. A consequence of the increase in initial internal energy is the ability to use less power to effect collisional activation. This allows lower q(z) values to be used and, thus, a greater mass range of product ions to be observed. TA-CID alleviates the problems associated with traditional CID and results in more available information than traditional CID.
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