| 摘要 |
<p>The present disclosure is related to improved systems and methods for inducing infrared multiphoton dissociation (IRMPD) of an ion. In an exemplary embodiment, the system includes an ion dissociation chamber (30) and an infrared waveguide (20) coupled to the ion dissociation chamber (30). The infrared waveguide (20) may be positioned to receive infrared energy from an infrared energy source (10) and direct the infrared energy towards ions in the ion dissociation chamber (30) for the purpose of fragmenting the ions. The infrared waveguide (20) can be made of a hollow fused silica body with an inner infrared reflective layer. The infrared waveguide (20) may be flexible. A system may further include a focusing lens (16), an infrared transparent window (70) and an aperture housing (60) that has an orifice (62). The ion dissociation chamber (30) may be an ion trap, an ion guide or an ion reservoir. In one embodiment, ions may be directed into an ion storage area (40) of an ion dissociation chamber (30), the infrared energy is directed into the infrared waveguide (20) which is aligned with the ion storage area (40) and then infrared energy is delivered to the ions located within the ion storage area (40).</p> |
