http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2440618-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5db97a1c67e768f4b174d8c343d5a713 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J49-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N27-622 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J49-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01J49-40 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J49-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01J49-26 |
| filingDate | 2007-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_17e1e5557a14ab79aaf040e9dcfb061f |
| publicationDate | 2008-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-2440618-A |
| titleOfInvention | Injecting ions into an ion mobility device from a lower pressure region |
| abstract | A mass spectrometer is disclosed comprising a first chamber 10 and a second chamber 5 with an inter-chamber aperture 12 located therebetween. An ion guide 13 is located in the first chamber 10 and an ion mobility spectrometer or separator 6 is located in the second chamber 5. As ions are accelerated towards the ion mobility spectrometer 6 from a relatively low pressure region, they pass initially into the first chamber 10 provided with a first gas or mixture of gases, preferably helium, having a first average density or molecular weight M1. The ions are then transmitted by the ion guide 13 on into the second chamber 5 which is provided with a second gas or mixture of gases with a second average density or molecular weight M2, wherein M1 < M2 and preferably M2/M1 / 4. The helium gas provided in the first chamber 10 minimizes ion fragmentation and ion discrimination effects as ions are accelerated into a relatively high pressure region 5. |
| priorityDate | 2006-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.