In-chamber fluid handling system and methods handling fluids using the same

Patent metadata

Field	Value
Publication number	US-9524856-B2
Application number	US-201414174677-A
Country	US
Kind code	B2
Filing date	Feb 6, 2014
Priority date	Feb 9, 2013
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

A sample chamber is configured to accommodate a target such that a portion of the target is removable as a sample. A carrier gas injection system is configured to introduce a carrier gas into the sample region from a first position and a second position within the sample chamber such that at least a portion of the sample is entrainable by the carrier gas within the sample region. A portion of the sample region is located between the first position and the second position. A sample transport conduit is configured to transport at least a portion of the sample entrained by the carrier gas to a location outside the sample chamber.

First claim

What is claimed is:

1. An apparatus, comprising:
a chamber having an interior and an optical port through which light is transmittable into the interior thereof, wherein the interior is defined, at least in part, by a lower surface of the chamber;
a target holder disposed within an interior of the chamber, the target holder having a base defining a support surface on which a target is supportable above the lower surface of the chamber and at least one fluid transport conduit extending through the target holder, wherein the at least one fluid transport conduit has a first end in fluid communication with the interior of the chamber and a second end in fluid communication with the interior of the chamber, wherein the second end is further away from the support surface than the first end;
a carrier gas injection system configured to introduce a carrier gas into the interior of the chamber; and
a purge conduit in fluid communication with the interior of the chamber at a position elevationally below the support surface, the purge conduit configured to transport the fluid from the interior of the chamber to a location outside the chamber.

2. The apparatus of claim 1 , wherein
the carrier gas injection system configured to introduce a first flow of a carrier gas travelling substantially in a first direction into the interior of the chamber and a second flow of a carrier gas travelling substantially in a second direction into the interior of the chamber, wherein the first direction is different from the second direction.

3. The apparatus of claim 2 , wherein the carrier gas injection system is configured such that the first direction extends along an axis that is at least substantially parallel to an axis along which the second direction extends.

4. The apparatus of claim 1 , wherein the carrier gas injection system includes at least one injection nozzle.

5. The apparatus of claim 4 , wherein the at least one injection nozzle includes:
an inlet configured to receive an input stream of the carrier gas;
a stream modification section configured to modify at least one characteristic of the input stream, thereby forming a modified stream of the carrier gas; and
an outlet configured to eject the modified stream of the carrier gas into the interior of the sample chamber,
wherein the modified stream has at least one characteristic that is different from that of the input stream.

6. The apparatus of claim 5 , wherein the at least one characteristic is selected from the group consisting of flow rate, direction of flow, cross-sectional shape and pressure.

7. The apparatus of claim 1 , wherein the chamber includes an access opening configured to permit at least one selected from the group consisting of: passage of the target into the interior of the chamber, and passage of the target out from the interior of the chamber.

8. The apparatus of claim 1 , wherein the carrier gas injection system is configured to introduce a carrier gas into the interior of the chamber from a first position and a second position within the chamber.

9. The apparatus of claim 8 , wherein a portion of the target holder is located between the first position and the second position.

10. The apparatus of claim 1 , further comprising a laser system configured to direct a laser pulse through the optical port and into the interior of the chamber.

11. The apparatus of claim 1 , further comprising a sample transport conduit having a first end and a second end opposite the first end, wherein the first end is arranged within the interior of the chamber at a location elevationally between the optical port and the support surface of the target holder, and wherein the second end is arranged outside the chamber.

12. The apparatus of claim 1 , wherein the first end of at least one fluid transport conduit is formed in the support surface.

13. The apparatus of claim 1 , further including a foundation interposed between the base and the lower surface of the chamber such that a lower surface of the base opposite the support surface is spaced apart from the lower surface of the chamber.

14. The apparatus of claim 13 , wherein the second end of at least one fluid transport conduit is formed in the lower surface of the base.

15. The apparatus of claim 1 , further including a fence disposed at a peripheral region of the support surface, the fence the extending from the support surface towards the optical port.

16. The apparatus of claim 15 , wherein the first end of at least one fluid transport conduit is formed in the fence.

17. The apparatus of claim 1 , wherein an inlet of the purge conduit is formed in a side surface of the chamber, wherein the side surface at least partly defines the interior of the chamber and wherein the target holder is spaced apart from the side surface.

18. An apparatus, comprising:
a sample chamber configured to accommodate a target, the sample chamber including a sample region within the interior thereof;
a laser system configured to direct a laser pulse into the sample region to irradiate the target, the laser pulse configured to ablate a material from which the target is formed;
a carrier gas injection system configured to introduce a carrier gas into the sample region from a first position and a second position within the sample chamber such that at least a portion of the ablated material is entrainable by the carrier gas within the sample region, wherein a portion of the sample region is located between the first position and the second position; and
a sample transport conduit configured to transport at least a portion of the ablated material entrained by the carrier gas to a location outside the sample chamber,
wherein the carrier gas injection system configured to introduce a first flow of a carrier gas travelling substantially in a first direction into the sample region and a second flow of a carrier gas travelling substantially in a second direction into the sample region such that at least a portion of the ablated material is entrainable by the carrier gas within the sample region, wherein the first direction is different from the second direction, and
wherein the carrier gas injection system is configured such that the first flow has a width, measured along a direction transverse the to the axis along which the first flow extends, that is greater than 10 mm.

19. An apparatus, comprising:
a sample chamber;
a target holder configured to be disposed within an interior of the sample chamber to define a sample region and a purge region within the interior of the sample chamber, the purge region being outside the sample region, wherein the target holder is further configured to support a target such that at least a portion of the target is disposable within the sample region, wherein the target holder comprises:
a base having a support surface configured to physically contact the target; and
at least one fluid transport conduit extending through the base and having a first end adjacent to the support surface and a second end in fluid communication with the purge region; and

a purge conduit in fluid communication with the interior of the sample chamber, the purge conduit configured to transport a fluid from the purge region to a location outside the sample chamber.

20. The apparatus of claim 19 , further comprising:
a carrier gas injection system configured to introduce a carrier gas into the sample region; and
a sample transport conduit in fluid communication with the interior of the chamber at a position above the purge conduit, the

Assignees

• Electro Scient Ind Inc

Inventors

• Hilliard Shane
• O'Connor Ciaran J
• Wilkins Jay
• Larsen Erik
• Summerfield Leif

Classifications

• G01N2001/383

  collecting and diluting in a flow of liquid · CPC title

• H01J49/04

  Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components · CPC title

• H01J49/0463

  Desorption by laser or particle beam, followed by ionisation as a separate step (sample holder per se H01J49/0418) · CPC title

• G01N2001/2241

  purpose-built sampling enclosure for emissions · CPC title

• G01N1/2226 Primary

  Sampling from a closed space, e.g. food package, head space · CPC title