<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:DengXian;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:LucidaGrande;
panose-1:0 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:Cambria;
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:"\@DengXian";
panose-1:2 1 6 0 3 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman",serif;
mso-fareast-language:SL;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
p.Default, li.Default, div.Default
{mso-style-name:Default;
margin:0cm;
margin-bottom:.0001pt;
text-autospace:none;
font-size:12.0pt;
font-family:"Arial",sans-serif;
color:black;
mso-fareast-language:ZH-CN;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 70.85pt 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><a name="_Hlk20313133"><span lang=SL>Vabimo vas na 5. predavanje iz sklopa "Kolokviji na IJS" v letu 2019/20, ki bo <strong><span style='color:red'>v torek, 14. januarja 2019, ob 13. uri </span></strong><span style='color:red'>v Veliki predavalnici Instituta »Jožef Stefan«</span> na Jamovi cesti 39 v Ljubljani. Napovednik predavanja najdete tudi na naslovu </span></a><a href="http://www.ijs.si/ijsw/Koledar_prireditev"><span style='mso-bookmark:_Hlk20313133'><span lang=SL>http://www.ijs.si/ijsw/Koledar_prireditev</span></span><span style='mso-bookmark:_Hlk20313133'></span></a><span style='mso-bookmark:_Hlk20313133'><span lang=SL>, posnetke preteklih predavanj<span style='color:blue'> </span>pa na </span></span><a href="http://videolectures.net/kolokviji_ijs"><span style='mso-bookmark:_Hlk20313133'><span lang=SL>http://videolectures.net/kolokviji_ijs</span></span><span style='mso-bookmark:_Hlk20313133'></span></a><span style='mso-bookmark:_Hlk20313133'><span lang=SL>. <o:p></o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><span lang=SL>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br><br><o:p></o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><b><span lang=EN-US>prof. dr. Geoffrey W. Grime<o:p></o:p></span></b></span></p><p class=MsoNormal style='text-align:justify'><span style='mso-bookmark:_Hlk20313133'><i><span lang=EN-US>University of Surrey, Ion Beam Centre, Guildford, United Kingdom<o:p></o:p></span></i></span></p><p class=MsoNormal style='text-align:justify'><span style='mso-bookmark:_Hlk20313133'><i><span lang=EN-US>Oxford Microbeams Limited, Oxford, United Kingdom<o:p></o:p></span></i></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:justify'><span style='mso-bookmark:_Hlk20313133'><b><span lang=SL style='font-size:14.0pt'>Skozi drugačne oči: štirideset let jedrske mikroskopije na mikrometrski skali <o:p></o:p></span></b></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:justify'><span style='mso-bookmark:_Hlk20313133'><span lang=SL>L. 2020 mineva štirideset let od prve objave slik, dobljenih z analizo z ionskim žarkom s prostorsko ločljivostjo 1 mikrometra. Ta metoda izkorišča reakcijske produkte, ki jih oddajajo vzorci po obsevanju z žarkom ionov z energijo nekaj megaelektronvoltov iz ionskega pospeševalnika. Ti produkti sestojijo iz svetlobe in rengtenskih žarkov, ki jih oddajajo elektroni atomov, nato iz delcev in žarkov gama, ki jih izsevajo vzbujena jedra, ter naprej in nazaj sipanih delcev iz žarka samega. Iz reakcijskih produktov lahko razberemo koncentracije elementov v vzorcu z visoko občutljivostjo, specifičnostjo in natančnostjo. V mnogih primerih lahko določimo tudi globinski profil ter strukturne in kemijske podatke. V poznih sedemdesetih je naša skupina v Oxfordu razvila metodo za fokusiranje visokoenergijskih ionskih žarkov na premer 1 mikrometra, s čimer smo dobili prvo jedrsko mikrosondo za slikanje. Danes je ta metoda na voljo v laboratorijih po vsem svetu in jo uporabljajo na različnih področjih od arheologije do zoologije. V predavanju bomo orisali ozadje in zgodovino jedrske mikrosonde in opisali nedavna projekta, ki smo ju izpeljali na Univerzi v Surreyju in ki izpostavljata širok spekter uporabnosti jedrske mikrosonde: rekonstrukcijo izgubljene slike na zbledelem vitražu in identifikacijo kovinskih atomov v proteinih. <o:p></o:p></span></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;text-align:justify'><span style='mso-bookmark:_Hlk20313133'><span lang=SL>Predavanje bo v angleščini.<o:p></o:p></span></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><span style='mso-bookmark:_Hlk20313133'><strong><span lang=SL style='color:red'>Lepo vabljeni!<o:p></o:p></span></strong></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><span lang=SL><o:p> </o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><span lang=SL> **********************<o:p></o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><span lang=SL><o:p> </o:p></span></span></p><span lang=SL style='font-size:12.0pt;font-family:"Times New Roman",serif;mso-fareast-language:SL'><br clear=all style='page-break-before:always'></span><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><span lang=SL style='color:black'>We invite you to the 5th Institute colloquium in the academic year 2019/20. The colloquium will be held </span><b><span lang=SL style='color:red'>on Tuesday January 14, 2019 at 1 PM</span></b><span lang=SL style='color:red'> in <b>the main Institute lecture hall</b></span><span lang=SL style='color:black'>, Jamova 39, Ljubljana. To read the abstract click </span></span><a href="http://www.ijs.si/ijsw/Koledar_prireditev"><span style='mso-bookmark:_Hlk20313133'><span lang=SL>http://www.ijs.si/ijsw/Koledar_prireditev</span></span><span style='mso-bookmark:_Hlk20313133'></span></a><span style='mso-bookmark:_Hlk20313133'><span lang=SL style='color:#1F497D'>. </span><span lang=SL style='color:black'>Past colloquia are posted on</span><span lang=SL style='color:#1F497D'> </span></span><a href="http://videolectures.net/kolokviji_ijs"><span style='mso-bookmark:_Hlk20313133'><span lang=SL>http://videolectures.net/kolokviji_ijs</span></span><span style='mso-bookmark:_Hlk20313133'></span></a><span style='mso-bookmark:_Hlk20313133'><span lang=SL style='color:#1F497D'>.<o:p></o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><span lang=SL style='color:#1F497D'><o:p> </o:p></span></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='mso-bookmark:_Hlk20313133'><span lang=SL>********************************************<b><o:p></o:p></b></span></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><b><span lang=EN-US>prof. dr. Geoffrey W. Grime<o:p></o:p></span></b></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><i><span lang=EN-US>University of Surrey, Ion Beam Centre, Guildford, Velika Britanija<o:p></o:p></span></i></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><i><span lang=EN-US>Oxford Microbeams Limited, Oxford, Velika Britanija<o:p></o:p></span></i></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><b><i><span lang=EN-US><o:p> </o:p></span></i></b></span></p><p class=Default><span style='mso-bookmark:_Hlk20313133'><b><span lang=SL style='font-size:14.0pt;font-family:"Times New Roman",serif;color:#202020;mso-fareast-language:SL'>Through different eyes: Forty years of nuclear microscopy at the micrometre scale<o:p></o:p></span></b></span></p><p class=Default><span style='mso-bookmark:_Hlk20313133'><span lang=EN-US style='font-family:"Times New Roman",serif'><o:p> </o:p></span></span></p><p class=MsoNormal style='text-align:justify'><span style='mso-bookmark:_Hlk20313133'><span lang=EN-US style='font-family:"Cambria",serif;color:black;mso-fareast-language:EN-US'>2020 marks the fortieth anniversary of the first published images using ion beam analysis (IBA) at a spatial resolution of 1 micrometre. IBA exploits the reaction products emitted when samples are exposed to a beam of megaelectron volt ions from a small nuclear accelerator. These include light and X-rays from atomic electrons, particles and gamma rays from the nuclei and forward or backward scattered beam particles. These can provide elemental concentrations with high sensitivity, specificity and accuracy. In many cases, depth profiles, structural and chemical information can also be measured. In the late 1970s, our group in Oxford developed the techniques for focusing high energy ion beams to micrometre size diameters and so produced the first imaging nuclear microprobe. Now the technique is available in laboratories across the world and is applied in fields ranging from archaeology to zoology. In this talk, we will outline the background and history of the nuclear microprobe and describe two recent projects carried out at the University of Surrey which highlight the wide range of applications: the reconstruction of the lost image on a weathered stained-glass window and identifying the metal atoms in protein molecules.<o:p></o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><span lang=SL><o:p> </o:p></span></span></p><p class=MsoNormal><span style='mso-bookmark:_Hlk20313133'><span lang=SL>Cordially invited!</span></span><span lang=SL><o:p></o:p></span></p><p class=MsoNormal><span lang=SL><o:p> </o:p></span></p></div></body></html>