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AssigneeShimadzu Research Laboratory (Europe) Ltd.
InventorsAlexander BERDNIKOV, Alina ANDREYEVA, Roger GILES
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The present invention is concerned with a device for charged particle transportation and manipulation. Embodiments provide a capability of combining positively and negatively charged particles in a single transported packet. Embodiments contain an aggregate of electrodes arranged to form a channel for transportation of charged particles, as well as a source of power supply that provides supply voltage to be applied to the electrodes, the voltage to ensure creation, inside the said channel, of a non-uniform high-frequency electric field, the pseudopotential of which field has one or more local extrema along the length of the channel used for charged particle transportation, at least, within a certain interval of time, whereas, at least one of the said extrema of the pseudopotential is transposed with time, at least within a certain interval of time, at least within a part of the length of the channel used for charged particle transportation.
1-23. (canceled)
A device for manipulating charged particles, the device comprising:
A device according to claim 1, wherein the device is configured to propagate discrete bunches of parent ions into the collision cell such that daughter ions resulting from fragmentation of each bunch of parent ions substantially remain within the same bunch of propagating ions as the parent ions from which they derived due to confinement by the non-uniform high-frequency electric field.
A device according to claim 1, wherein the second region of the channel is maintained at a higher pressure than the first and third regions of the channel.
A device according to claim 1, wherein first, second and third regions are located within a single vacuum chamber with at least one pump for pumping away gas.
A device according to claim 1, wherein the collision cell has a gas inlet and two conductance limiting segments wherein said channel is enclosed within a tube.
A device according to claim 1, wherein the collision cell is formed from series of segments and each segment is formed from four electrodes and four insulators where the four insulators form part of a supporting structure.
A device according to claim 1, wherein one or more segments of the channel are conductance limiting segments used for establishing pressure differentials within the device.
A device according to claim 1, wherein said channel has a variable profile along the length of the channel such that its cross section varies along its length.
A device according to claim 8, wherein the area of the cross section of the channel varies along the length of the channel.
A device according to claim 1, wherein some or all of the electrodes have a multipole profile.
A device according to claim 10, wherein the multipole profile is a coarsened multipole profile formed by any one or combination of:
A device according to claim 1, wherein some or all of the electrodes are formed from thin metallic films deposited on a non-conductive substrates.
Dependencies are inferred from the claim text.