Devices, systems, and methods for dissociation of ions using light emitting diodes

A photodissociation (PD) device for use in a mass spectrometer, comprising:

• an ion transport device, wherein the ion transport device is configured perform one or more of:
• transporting ions into the PD device,
• transporting the ions within the PD device,
• transporting the ions to a mass analyzer of the mass spectrometer, and
• trapping the ions within a region of the PD device;
• and
• one or more light emitting diodes (LEDs) positioned to irradiate the ions in the PD device, resulting in fragmentation of the ions.

A method of dissociating ions in a mass spectrometer, comprising:

• transporting ions to a first region of a photodissociation (PD) device;
• performing a first dissociation technique on the ions;
• transporting the ions from the first region to a second region of the PD device;
• and
• irradiating the ions in the second region using one or more light emitting diodes (LEDs), resulting in fragmentation of the ions.