MASS FILTER HAVING REDUCED CONTAMINATION

MASS FILTER HAVING REDUCED CONTAMINATION

A method of mass filtering ions is disclosed comprising: providing a first, AC-only, mass filter 2; providing a second mass filter 4 downstream of the first mass filter; applying a first AC voltage 8 to electrodes of the first mass filter so as to radially confine ions between the electrodes, and ap...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Langridge, David J, Green, Martin Raymond
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator Langridge, David J
Green, Martin Raymond
description A method of mass filtering ions is disclosed comprising: providing a first, AC-only, mass filter 2; providing a second mass filter 4 downstream of the first mass filter; applying a first AC voltage 8 to electrodes of the first mass filter so as to radially confine ions between the electrodes, and applying a second AC voltage 10 between electrodes of the first mass filter 2 so as to radially excite some of said ions such that these ions are not transmitted; and using the second mass filter 4 to mass filter ions; wherein at any given time the second mass filter 4 only transmits ions having a first range of mass to charge ratios and filters out all other ions; and wherein the step of applying the at least one second AC voltage 10 to electrodes of the first mass filter 2 radially excites ions such that at least some ions having mass to charge ratios above said first range are not transmitted into the second mass filter.
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_US2024395534A1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>US2024395534A1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_US2024395534A13</originalsourceid><addsrcrecordid>eNrjZNDwdQwOVnDz9AlxDVLwcAzz9HNXCHJ1CXV2dVFw9vcLcfT19HMM8fT342FgTUvMKU7lhdLcDMpuriHOHrqpBfnxqcUFicmpeakl8aHBRgZGJsaWpqbGJo6GxsSpAgCZDSUU</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>MASS FILTER HAVING REDUCED CONTAMINATION</title><source>esp@cenet</source><creator>Langridge, David J ; Green, Martin Raymond</creator><creatorcontrib>Langridge, David J ; Green, Martin Raymond</creatorcontrib><description>A method of mass filtering ions is disclosed comprising: providing a first, AC-only, mass filter 2; providing a second mass filter 4 downstream of the first mass filter; applying a first AC voltage 8 to electrodes of the first mass filter so as to radially confine ions between the electrodes, and applying a second AC voltage 10 between electrodes of the first mass filter 2 so as to radially excite some of said ions such that these ions are not transmitted; and using the second mass filter 4 to mass filter ions; wherein at any given time the second mass filter 4 only transmits ions having a first range of mass to charge ratios and filters out all other ions; and wherein the step of applying the at least one second AC voltage 10 to electrodes of the first mass filter 2 radially excites ions such that at least some ions having mass to charge ratios above said first range are not transmitted into the second mass filter.</description><language>eng</language><subject>BASIC ELECTRIC ELEMENTS ; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ; ELECTRICITY</subject><creationdate>2024</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20241128&amp;DB=EPODOC&amp;CC=US&amp;NR=2024395534A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20241128&amp;DB=EPODOC&amp;CC=US&amp;NR=2024395534A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Langridge, David J</creatorcontrib><creatorcontrib>Green, Martin Raymond</creatorcontrib><title>MASS FILTER HAVING REDUCED CONTAMINATION</title><description>A method of mass filtering ions is disclosed comprising: providing a first, AC-only, mass filter 2; providing a second mass filter 4 downstream of the first mass filter; applying a first AC voltage 8 to electrodes of the first mass filter so as to radially confine ions between the electrodes, and applying a second AC voltage 10 between electrodes of the first mass filter 2 so as to radially excite some of said ions such that these ions are not transmitted; and using the second mass filter 4 to mass filter ions; wherein at any given time the second mass filter 4 only transmits ions having a first range of mass to charge ratios and filters out all other ions; and wherein the step of applying the at least one second AC voltage 10 to electrodes of the first mass filter 2 radially excites ions such that at least some ions having mass to charge ratios above said first range are not transmitted into the second mass filter.</description><subject>BASIC ELECTRIC ELEMENTS</subject><subject>ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS</subject><subject>ELECTRICITY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2024</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNDwdQwOVnDz9AlxDVLwcAzz9HNXCHJ1CXV2dVFw9vcLcfT19HMM8fT342FgTUvMKU7lhdLcDMpuriHOHrqpBfnxqcUFicmpeakl8aHBRgZGJsaWpqbGJo6GxsSpAgCZDSUU</recordid><startdate>20241128</startdate><enddate>20241128</enddate><creator>Langridge, David J</creator><creator>Green, Martin Raymond</creator><scope>EVB</scope></search><sort><creationdate>20241128</creationdate><title>MASS FILTER HAVING REDUCED CONTAMINATION</title><author>Langridge, David J ; Green, Martin Raymond</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2024395534A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2024</creationdate><topic>BASIC ELECTRIC ELEMENTS</topic><topic>ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS</topic><topic>ELECTRICITY</topic><toplevel>online_resources</toplevel><creatorcontrib>Langridge, David J</creatorcontrib><creatorcontrib>Green, Martin Raymond</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Langridge, David J</au><au>Green, Martin Raymond</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>MASS FILTER HAVING REDUCED CONTAMINATION</title><date>2024-11-28</date><risdate>2024</risdate><abstract>A method of mass filtering ions is disclosed comprising: providing a first, AC-only, mass filter 2; providing a second mass filter 4 downstream of the first mass filter; applying a first AC voltage 8 to electrodes of the first mass filter so as to radially confine ions between the electrodes, and applying a second AC voltage 10 between electrodes of the first mass filter 2 so as to radially excite some of said ions such that these ions are not transmitted; and using the second mass filter 4 to mass filter ions; wherein at any given time the second mass filter 4 only transmits ions having a first range of mass to charge ratios and filters out all other ions; and wherein the step of applying the at least one second AC voltage 10 to electrodes of the first mass filter 2 radially excites ions such that at least some ions having mass to charge ratios above said first range are not transmitted into the second mass filter.</abstract><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language eng
recordid cdi_epo_espacenet_US2024395534A1
source esp@cenet
subjects BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
title MASS FILTER HAVING REDUCED CONTAMINATION
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-30T11%3A37%3A22IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=Langridge,%20David%20J&rft.date=2024-11-28&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EUS2024395534A1%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true