{"id":6073,"date":"2026-10-19T09:48:26","date_gmt":"2026-10-19T09:48:26","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-efnafraedi-arnar-haflidason\/"},"modified":"2026-10-19T09:48:26","modified_gmt":"2026-10-19T09:48:26","slug":"doktorsvorn-i-efnafraedi-arnar-haflidason","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-efnafraedi-arnar-haflidason\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed efnafr\u00e6\u00f0i – Arnar Hafli\u00f0ason"},"content":{"rendered":"
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Doktorsefni:<\/strong>\u00a0Arnar Hafli\u00f0ason<\/p>\n

Heiti ritger\u00f0ar:<\/strong>\u00a0Rofferli vi\u00f0 fj\u00f6llj\u00f3seinda\u00f6rvun og orkueiginleikar halogenhaldandi sameinda \u00fat fr\u00e1 massa- og myndgreiningu<\/p>\n

Andm\u00e6lendur:<\/strong>
<\/strong>Dr. Timothy Wright, pr\u00f3fessor \u00ed e\u00f0lisefnafr\u00e6\u00f0i og kennilegri efnafr\u00e6\u00f0i vi\u00f0 h\u00e1sk\u00f3lann \u00ed Nottingham. Bretandi
Dr. Ragnar J\u00f3hannsson svi\u00f0stj\u00f3ri hj\u00e1 Hafranns\u00f3knastofnun \u00cdslands.<\/p>\n

Lei\u00f0beinandi:<\/strong>\u00a0\u00c1g\u00fast Kvaran, pr\u00f3fessor vi\u00f0 Raunv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands.<\/p>\n

Einnig \u00ed doktorsnefnd:<\/strong>
<\/strong>Dr. G\u00edsli H\u00f3lmar J\u00f3hannesson, e\u00f0lisefnafr\u00e6\u00f0ingur og kennari vi\u00f0 H\u00e1sk\u00f3labr\u00fa Keilis.
Dr. Ragnar Bj\u00f6rnsson, e\u00f0lisefnafr\u00e6\u00f0ingur og h\u00f3pstj\u00f3ri hj\u00e1 Max Planck Institute for Chemical Energy Conversion, Mulheim \u00ed \u00de\u00fdskalandi.
Dr. Kristj\u00e1n Matth\u00edasson, a\u00f0j\u00fankt vi\u00f0 Raunv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands og kennari vi\u00f0 T\u00e6knisk\u00f3lann.<\/p>\n

Doktorsv\u00f6rn st\u00fdrir:<\/strong>\u00a0Dr. Oddur Ing\u00f3lfsson, pr\u00f3fessor og deildarforseti Raunv\u00edsindadeildar H\u00e1sk\u00f3la \u00cdslands.<\/p>\n

\u00c1grip<\/strong><\/p>\n

Ranns\u00f3knirnar f\u00f3lust einkum \u00ed a\u00f0 kanna \u00e1hrif fj\u00f6llj\u00f3seinda\u00f6rvunar \u00e1 rofferli HBr, DC l og br\u00f3mometan sameinda me\u00f0 massagreiningu (MR-MPI a\u00f0fer\u00f0) og myndgreiningu (VMI). T\u00falkun m\u00e6ligagna f\u00f3lst \u00ed greiningu \u00e1 fj\u00f6llj\u00f3seindar\u00f3fum ((2+n)REMPI r\u00f3f) sem og \u00e1 hra\u00f0a- (KERs) og hornh\u00e1\u00f0um dreifimynstrum j\u00f3na sem myndast. Athuganir \u00e1 HBr s\u00fdndu truflanir vegna v\u00edxlverkana \u00e1 milli \u00fer\u00edstigs- og einstigs-orku\u00e1standa sameindarinnar, sem birtust \u00ed formi hli\u00f0runar (LS \u00e1hrif) og styrkbreytinga (LI \u00e1hrif) litr\u00f3fsl\u00edna \u00ed MR-REMPI litr\u00f3fum sem og \u00ed formi \u00f3reglulegra mynstra \u00ed VMI myndum. Samkv\u00e6mt DCl m\u00e6lig\u00f6gnum fundust fimm n\u00fd Rydberg orku\u00e1st\u00f6nd og \u00e1tta n\u00fd titrings\u00e1st\u00f6nd j\u00f3n-para forms sameindarinnar. Sterk v\u00edxlverkunar\u00e1hrif greindust milli einstigs Rydberg \u00e1standa og j\u00f3n-para \u00e1standsins sem birtist \u00ed formi LS og LI \u00e1hrifa og sem sams\u00e6tuhli\u00f0ranir. Framkv\u00e6mdur var samanbur\u00f0ur vi\u00f0 samb\u00e6rileg g\u00f6gn fr\u00e1 HCl. \u00d3reglulegt mynstur REMPI litr\u00f3fa fyrir sameindabrotin CH og CD sem myndu\u00f0ust vi\u00f0 fj\u00f6llj\u00f3seindarof bromoforms b\u00e1ru vitni um hra\u00f0virka rofnun fj\u00f6gurra Rydberg \u00e1standa. LS og LI \u00e1hrif sem og breikkun litr\u00f3fsl\u00edna b\u00e1ru \u00feessu vitni. Orka vi\u00f0komandi \u00e1standa var au\u00f0kennd. Fj\u00f6lm\u00f6rg Rydberg \u00e1st\u00f6nd CH3Br sameindarinnar voru orku\u00f6rvu\u00f0 \u00e1 tveggja lj\u00f3seinda bylgjut\u00f6lusvi\u00f0inu 66 000 \u2013 80 000 cm-1. Rofferli voru k\u00f6nnu\u00f0 me\u00f0 a\u00f0fer\u00f0um eins- og tv\u00edlita fj\u00f6llj\u00f3seinda\u00f6rvana. Einnar-, tveggja og \u00feriggja lj\u00f3seinda \u00f6rvanir sameindarinnar leiddu allar til myndunar sameindabrotanna CH3 og Br \u00ed grunn-rafeinda\u00e1st\u00f6ndum. Meginrofferli sameindarinnar var hins vegar myndun CH3 Rydberg \u00e1standa \u00e1samt br\u00f3m frumeindum \u00ed kj\u00f6lfar \u00feriggja lj\u00f3seinda \u00f6rvunarinnar. V\u00edsbendingar um v\u00edxlverkun milli Rydberg \u00e1standa og j\u00f3n-para \u00e1standa fundust.<\/p>\n

Um doktorsefni\u00f0<\/strong><\/p>\n

Arnar Hafli\u00f0ason \u00fatskrifa\u00f0ist af n\u00e1tt\u00farufr\u00e6\u00f0ibraut fr\u00e1 Kvennask\u00f3lanum \u00ed Reykjav\u00edk \u00e1ri\u00f0 1998. \u00c1ri\u00f0 2008 \u00fatskrifa\u00f0ist hann me\u00f0 B.Sc. gr\u00e1\u00f0u \u00ed efnafr\u00e6\u00f0i fr\u00e1 H\u00e1sk\u00f3la \u00cdslands. Arnar f\u00f3r \u00e1 vinnumarka\u00f0inn \u00ed nokkur \u00e1r, \u00fear sem hann stafa\u00f0i hj\u00e1 Roche NimbleGen til \u00e1rsins 2013.<\/p>\n

\u00c1ri\u00f0 2013 h\u00f3f hann doktorsn\u00e1m \u00ed efnafr\u00e6\u00f0i vi\u00f0 Raunv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands.<\/p>\n

Foreldrar Arnars eru \u00feau, Arnd\u00eds Sigur\u00f0ard\u00f3ttir og Hafli\u00f0i Gu\u00f0mundsson heitinn (1941-2011). Arnar \u00e1 einn br\u00f3\u00f0ur, Sigur\u00f0 Hafli\u00f0ason, og 4 \u00e1ra d\u00f3ttur, sem heitir El\u00edsa N. Arnarsd\u00f3ttir.<\/p>\n

Vi\u00f0bur\u00f0ur \u00e1 Facebook<\/strong><\/a><\/p>\n<\/div><\/div>","protected":false},"featured_media":1743,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_phd_date_start":"2018-12-07T14:00:00+00:00","_phd_date_end":"2018-12-07T16:00:00+00:00","_phd_location":"Askja Stofa 132","_phd_admission":"Allir velkomnir","_phd_thesis_title":"Rofferli vi\u00f0 fj\u00f6llj\u00f3seinda\u00f6rvun og orkueiginleikar halogenhaldandi sameinda \u00fat fr\u00e1 massa- og myndgreiningu","_phd_source_url":"https:\/\/gamli.hi.is\/vidburdir\/doktorsvorn_i_efnafraedi_arnar_haflidason","_phd_source_node_id":"312962","_phd_source_type":"vidburdir","_phd_member_id":429,"footnotes":""},"phd_school":[101,93],"phd_discipline":[102],"class_list":["post-6073","phd_defence","type-phd_defence","status-publish","has-post-thumbnail","hentry","phd_school-raunvisindadeild","phd_school-verkfraedi-og-natturuvisindasvid","phd_discipline-phd-i-efnafraedi"],"_links":{"self":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6073","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence"}],"about":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/types\/phd_defence"}],"version-history":[{"count":0,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6073\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media\/1743"}],"wp:attachment":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media?parent=6073"}],"wp:term":[{"taxonomy":"phd_school","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_school?post=6073"},{"taxonomy":"phd_discipline","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_discipline?post=6073"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}