Gregory J. Wells

Mass scanning method using an ion trap mass spectrometer

Ion trap mass spectrometer using pre-calculated waveforms for ion isolation and collision induced dissociation

Pulsed ion source for ion trap mass spectrometer

Quadrupole trap ion isolation method

Pneumatically assisted electrospray device with alternating pressure gradients for mass spectrometry

Vortex gas flow interface for electrospray mass spectrometry

Field conditions for ion excitation in linear ion processing apparatus

Rotating excitation field in linear ion processing apparatus

Increasing ion kinetic energy along axis of linear ion processing devices

METHOD AND APPARATUS FOR ATMOSPHERIC PRESSURE CHEMICAL IONIZATION