{"id":6901,"date":"2019-03-15T08:14:39","date_gmt":"2019-03-15T08:14:39","guid":{"rendered":"http:\/\/iker.atomki.hu\/?page_id=6901"},"modified":"2019-03-15T09:54:39","modified_gmt":"2019-03-15T09:54:39","slug":"vg-5400-noble-gas-mass-spectrometer","status":"publish","type":"page","link":"https:\/\/iker.atomki.hu\/en\/vg-5400-noble-gas-mass-spectrometer\/","title":{"rendered":"VG-5400 noble gas mass spectrometer"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_custom_heading source=&#8221;post_title&#8221; font_container=&#8221;tag:h3|text_align:left&#8221; use_theme_fonts=&#8221;yes&#8221;][vc_text_separator title=&#8221;ICER&#8221; title_align=&#8221;separator_align_left&#8221; color=&#8221;custom&#8221; style=&#8221;dotted&#8221; border_width=&#8221;2&#8243; css_animation=&#8221;right-to-left&#8221; accent_color=&#8221;#5eb3d2&#8243;][\/vc_column][\/vc_row][vc_row 0=&#8221;&#8221;][vc_column 0=&#8221;&#8221;][vc_column_text 0=&#8221;&#8221;]<span style=\"color: #000000\"><b>The VG-5400 is a dedicated mass spectrometer for noble gas isotopes. It is a double focusing instrument with extended geometry.<\/b><\/span>[\/vc_column_text][\/vc_column][\/vc_row][vc_row 0=&#8221;&#8221;][vc_column width=&#8221;1\/2&#8243;][vc_single_image image=&#8221;2459&#8243; img_size=&#8221;large&#8221;][\/vc_column][vc_column width=&#8221;1\/2&#8243;][vc_column_text 0=&#8221;&#8221;]It has a Nier-type ion source, an electromagnetic analyser, a Faraday collector with a 100 GOhm resistor, and an ion counter (SEM: secondary electron multiplier). The sample is admitted the mass spectrometer through a cryogenic preparation and purification line. The sensitivity of the mass spectrometer is 1\u00d710<span class=\"s5\"><sup>-3<\/sup><\/span><span class=\"s1\"> A\/Torr and 2\u00d710<\/span><span class=\"s5\"><sup>-4<\/sup><\/span><span class=\"s1\"> A\/ Torr for argon and helium, respectively. It enables us to detect even 5000 <\/span><span class=\"s5\"><sup>3<\/sup><\/span><span class=\"s1\">He atoms. The resolution of more than 600 at 3 amu allows us to resolve a\u00a0<\/span><span class=\"s5\"><sup>3<\/sup><\/span><span class=\"s1\">He<\/span><span class=\"s5\"><sup>+<\/sup><\/span><span class=\"s1\"> peak and H<\/span><span class=\"s5\"><sub>3<\/sub><sup>+<\/sup><\/span><span class=\"s1\">\/HD<\/span><span class=\"s5\"><sup>+ <\/sup><\/span><span class=\"s1\">double peak.\u00a0The tritium concentration of environmental water samples are determined via the mass spectrometric analysis of its daughter, <span class=\"s5\"><sup>3<\/sup><\/span>He. The pressure sensitivity and hence the systematic error of the measurement of low level helium abundances are eliminated by adding an ultrapure 4He spike to each tritiogenic <span class=\"s5\"><sup>3<\/sup><\/span>He samples. The 10-20 % of systematic error could be reduced below 2 permil. Besides tritium analyses, noble gases dissolved in groundwater are determined by the mass spectrometer. <span class=\"s5\"><sup>3<\/sup><\/span>H\/<span class=\"s5\"><sup>3<\/sup><\/span>He apparent ages and recharge temperatures can be calculated from the noble gas concentrations and helium isotope ratios. All these values are applied in the research of recharge areas and palaeoclimate.<\/span>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column 0=&#8221;&#8221; css=&#8221;.vc_custom_1552643330015{margin-top: -2% !important;}&#8221;][vc_separator][vc_column_text 0=&#8221;&#8221;]<\/p>\n<h4 class=\"p2\"><span class=\"s1\"><b>Related photo documentation<\/b><\/span><\/h4>\n<p>[\/vc_column_text][vc_masonry_grid post_type=&#8221;portfolio&#8221; max_items=&#8221;10&#8243; element_width=&#8221;2&#8243; gap=&#8221;5&#8243; item=&#8221;mediaGrid_ScaleInWithIcon&#8221; grid_id=&#8221;vc_gid:1552643662129-5615b165-bdd8-0&#8243; taxonomies=&#8221;60&#8243;][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_custom_heading source=&#8221;post_title&#8221; font_container=&#8221;tag:h3|text_align:left&#8221; use_theme_fonts=&#8221;yes&#8221;][vc_text_separator title=&#8221;ICER&#8221; title_align=&#8221;separator_align_left&#8221; color=&#8221;custom&#8221; style=&#8221;dotted&#8221; border_width=&#8221;2&#8243; css_animation=&#8221;right-to-left&#8221; accent_color=&#8221;#5eb3d2&#8243;][\/vc_column][\/vc_row][vc_row 0=&#8221;&#8221;][vc_column 0=&#8221;&#8221;][vc_column_text 0=&#8221;&#8221;]The VG-5400 is a dedicated mass spectrometer for noble gas isotopes. It is<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":3,"featured_media":3037,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-6901","page","type-page","status-publish","has-post-thumbnail","hentry"],"jetpack_shortlink":"https:\/\/wp.me\/PaF6JY-1Nj","_links":{"self":[{"href":"https:\/\/iker.atomki.hu\/en\/wp-json\/wp\/v2\/pages\/6901","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iker.atomki.hu\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/iker.atomki.hu\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/iker.atomki.hu\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/iker.atomki.hu\/en\/wp-json\/wp\/v2\/comments?post=6901"}],"version-history":[{"count":9,"href":"https:\/\/iker.atomki.hu\/en\/wp-json\/wp\/v2\/pages\/6901\/revisions"}],"predecessor-version":[{"id":6984,"href":"https:\/\/iker.atomki.hu\/en\/wp-json\/wp\/v2\/pages\/6901\/revisions\/6984"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iker.atomki.hu\/en\/wp-json\/wp\/v2\/media\/3037"}],"wp:attachment":[{"href":"https:\/\/iker.atomki.hu\/en\/wp-json\/wp\/v2\/media?parent=6901"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}