February 2012 - Vip-all.phys

[vip-all] IFA-nyheder, uge 7 / IFA news, week 7
by Mette Alstrup Lie 13 Feb '12

13 Feb '12

*Læs følgende nyheder for uge 7: * Penge til fysisk kontakt over Atlanten <http://science.au.dk/nyheder-og-arrangementer/nyhed/artikel/penge-til-fysis…> Fysikeren Nikolaj Thomas Zinner fra Aarhus Universitet modtager 288.000 kr. fra Styrelsen for Forskning og Innovation med henblik på at skabe et permanent samarbejde med tre universiteter i São Paulo inden for forskning og uddannelse i teoretisk fysik IFAs Strategiplan 2013-2017 kan findes her <http://phys.au.dk/fileadmin/site_files/intern/IFA-strategi_2013-2017.pdf> Invitation til stormøde for postdocs på Science and Technology <http://science.au.dk/nyheder-og-arrangementer/nyhed/artikel/invitation-til-…>, tirsdag den 21. februar 14.00-16.00 Centre for Science Education Workshop - Experiences of Assessing and Rewarding Excellence in University Teaching <http://phys.au.dk/fileadmin/site_files/nyheder/cse_workshop_29-02-2012.pdf>, onsdag 29. februar 14.00-17.00 Bemærk frist 19/4: EuroCenter kursus - Bliv dus med Marie Curie (kursusdato 26/4) <http://phys.au.dk/nyhed/artikel/bemaerk-frist-194-bliv-dus-med-marie-curie/> Se ansøgningsfrister <http://phys.au.dk/arrangementer-og-nyheder/opslag/> Se kalenderen for kommend <http://phys.au.dk/arrangementer-og-nyheder/>e arrangementer <http://phys.au.dk/arrangementer-og-nyheder/>* * *IFA Nyheder lægges løbende på hjemmesiden.* Linket hertil ligger på forsiden, nederst i menuen til højre Login til de interne sider for medarbejdere <http://phys.au.dk/om-instituttet/generel-information/medarbejderinformation…> : bruger: intra kode: ifaintra Bidrag sendes til ifa-nyt(a)phys.au.dk <mailto:ifa-nyt@phys.au.dk> __________ *IFA News, week 7 *Funds for physics contact across the Atlantic <http://science.au.dk/en/news-and-events/news-article/artikel/penge-til-fysi…> The Danish Agency for Science, Technology and Innovation has awarded a grant of DKK 288,000 (approximately EUR 39,000) to physicist Nikolaj Thomas Zinner, Aarhus University, to set up permanent collaboration with three universities in São Paulo regarding research and education in theoretical physics See IFA's Strategic Plan 2013-2017 here <http://phys.au.dk/fileadmin/site_files/intern/IFA-strategi_2013-2017.pdf> Invitation to general assembly for postdoctoral scholars at Science and Technology <http://science.au.dk/en/news-and-events/news-article/artikel/invitation-to-…>, Tuesday 21 February at 14.00-16.00 Centre for Science Education Workshop - Experiences of Assessing and Rewarding Excellence in University Teaching <http://phys.au.dk/fileadmin/site_files/nyheder/cse_workshop_29-02-2012.pdf>, Wednesday 29 February 14.00-17.00 Note the deadline 19/4: EuroCenter course - Learn about Marie Curie (date of the course 26/4) <http://phys.au.dk/nyhed/artikel/bemaerk-frist-194-bliv-dus-med-marie-curie/> Please find the list of calls <http://phys.au.dk/en/events-and-news/calls/> To see coming events and news <http://phys.au.dk/en/events-and-news/> *Remember to check the internal news online* Go to News for employees at IFA <http://phys.au.dk/en/the-department/general-information/information-for-emp…> Login to internal news online <http://phys.au.dk/om-instituttet/generel-information/medarbejderinformation…>: user: intra password: ifaintra ** Medvenlig hilsen / Kind regards Mette Lie -- Mette Alstrup Lie Department of Physics and Astronomy Aarhus University Ny Munkegade 120 DK-8000 Aarhus C Denmark Office 1522-214 e-mail:lie@phys.au.dk Tel: +45 8715 5607 Mobile: +45 2165 4361

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[vip-all] AMO seminar - Patrick Gill - today 11:15 in Fys. Aud.
by Aurélien Dantan 10 Feb '12

10 Feb '12

Title: Optical Atomic Clocks Speaker: Patrick Gill National Physical Laboratory, UK Time: Friday, February 10th, 11.15 Place: Phys. Aud. Abstract: Optical atomic clocks based on laser-cooled single ions have undergone significant development over the last five years, as has been suitably demonstrated by the leading results for the Al+ quantum logic clock, where a frequency inaccuracy below 10^-17 has recently been reported [1]. A number of optical clock systems now achieve or exceed the performance of the Cs fountain primary standards used to realise the SI second. At NPL, we are researching single trapped ion and neutral atom optical lattice systems as future optical frequency standards and clocks, within the context of a possible redefinition of the second at the end of the decade. These include the single 88Sr+ ion 2S1/2 - 2D 5/2 quadrupole clock transition at 674 nm, and the octupole / quadrupole (467 nm / 435 nm) double clock system in 171Yb+, as well as the Sr neutral optical lattice clock at 698 nm. I will discuss aspects of these experiments. I will also discuss our development of monolithic ion microtraps built into silicon wafers. These have potential as platforms for miniature ion clocks with multiple ions, quantum logic clocks and space clocks. With the high level of accuracy now on offer from a number of optical clock systems, the need for remote clock comparisons at a level that does not compromise their operating capability becomes paramount. I will point to some recent remote clock comparison experiments at NPL. Finally, the exquisite sensitivity of optical clocks points to their use as highly sensitive probes for tests of physics and fundamental constants. A natural extension to this application might be their deployment in future fundamental tests in space, where seismic noise is reduced and larger gravitational changes are possible. [1] C.-W. Chou, D.B. Hume, J.C.J. Koelemeij, D.J. Wineland and T. Rosenband Frequency Comparison of Two High-Accuracy Al+ Optical Clocks Phys. Rev. Lett. 104, 070802 (2010) Jacob Sherson and Aurélien Dantan Coffee, tea and cake will be served at 11.05 ----------------------------------- Aurelien Dantan Ion Trap Group Department of Physics and Astronomy University of Aarhus Ny Munkegade, bygn. 1520 8000 Aarhus Denmark +4589423602

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[vip-all] HUSK: informationsmøde i dag kl. 14.15
by Ruth Laursen 08 Feb '12

08 Feb '12

i Fys. Aud. Der er kaffe og kage fra kl. 14. vh ruth ******************************* Ruth Laursen Head of Department Secretariat Department of Physics and Astronomy Aarhus University Ny Munkegade 120 8000 Aarhus C Denmark e-mail: ruth(a)phys.au.dk Office: 1522-212 Mobile: + 45 2338 2335 Telephone: +45 8715 5652

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[vip-all] IFA-nyheder, uge 6 / IFA news, week 6
by Mette Alstrup Lie 06 Feb '12

06 Feb '12

*Læs følgende nyheder for uge 6: * Institutlederen holder informationsmøde *onsdag den 8. februar kl. 14.15* i Fysisk Auditorium Blandt emnerne er: IFA status og bemanding, benchmarking, strategikort og handlingsplan, stillingsplan, MUS, årets tema for 2012 Der er kaffe/the og fastelavnsboller ved auditoriet fra kl. 14 Ny procedure for registrering af ferie og fravær pr. 1/2-2012 <http://phys.au.dk/fileadmin/site_files/intern/Registrering_af_ferie_og_frav…>* *Instituttets fraværsansvarlige er Trine Binderup: trinebm(a)phys.au.dk <mailto:trinebm@phys.au.dk> Hvis du skal have slettet feriedage, skal du sende hende en mail med de pågældende datoer og dit cpr-nummer Invitation til stormøde for postdocs på Science and Technology, tirsdag den 21. februar 14.00-16.00 <http://science.au.dk/nyheder-og-arrangementer/nyhed/artikel/invitation-til-…> En af IFA's vacuumleverandører, Pfeiffer Vacuum, holder udstilling den 9. februar i forhallen <http://phys.au.dk/fileadmin/site_files/nyheder/pfeiffer-exhib-2012.pdf> Se ansøgningsfrister <http://phys.au.dk/arrangementer-og-nyheder/opslag/> Se kalenderen for kommend <http://phys.au.dk/arrangementer-og-nyheder/>e arrangementer <http://phys.au.dk/arrangementer-og-nyheder/>* * *IFA Nyheder lægges løbende på hjemmesiden.* Linket hertil ligger på forsiden, nederst i menuen til højre Login til de interne sider for medarbejdere <http://phys.au.dk/om-instituttet/generel-information/medarbejderinformation…> : bruger: intra kode: ifaintra Bidrag sendes til ifa-nyt(a)phys.au.dk <mailto:ifa-nyt@phys.au.dk> __________ *IFA News, week 5 *Information meeting by the head of department on *Wednesday 8 February at 14.15* in the Physics Auditorium Topics: IFA status and staff, benchmarking, strategy and plan of action, position planning, appraisal interviews, theme of the year 2012 Coffee/tea and Shrovetide buns will be served at the auditorium from 2 p.m. New procedure for registration of holidays and other types of absence as of 1 February 2012 <http://phys.au.dk/fileadmin/site_files/intern/Registration_of_holidays_and_…> Trine Binderup (trinebm(a)phys.au.dk <mailto:trinebm@phys.au.dk>) is responsible for holiday registration. If you want to cancel one or more holidays, please send her an e-mail stating the dates you want to cancel as well as your cpr number Invitation to general assembly for postdoctoral scholars at Science and Technology, Tuesday 21 February at 14.00-16.00 <http://science.au.dk/en/news-and-events/news-article/artikel/invitation-to-…> One of IFA's suppliers of vacuum, Pfeiffer Vacuum, will hold an exhibition in the main lobby on 9 February <http://phys.au.dk/fileadmin/site_files/nyheder/pfeiffer-exhib-2012.pdf> Please find the list of calls <http://phys.au.dk/en/events-and-news/calls/> To see coming events and news <http://phys.au.dk/en/events-and-news/> *Remember to check the internal news online* Go to News for employees at IFA <http://phys.au.dk/en/the-department/general-information/information-for-emp…> Login to internal news online <http://phys.au.dk/om-instituttet/generel-information/medarbejderinformation…>: user: intra password: ifaintra ** Medvenlig hilsen / Kind regards Mette Lie -- Mette Alstrup Lie Department of Physics and Astronomy Aarhus University Ny Munkegade 120 DK-8000 Aarhus C Denmark Office 1522-214 e-mail:lie@phys.au.dk Tel: +45 8715 5607 Mobile: +45 2165 4361

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[vip-all] AMO seminar - Ridha Horchani - today 15:15
by Aurélien Dantan 02 Feb '12

02 Feb '12

Title: Manipulation of molecules with broadband laser: vibrational cooling and state conversion Speaker: Ridha Horchani Laboratoire Aimé Cotton, CNRS, Université Paris-Sud, France Time: Thursday, February 2nd, 15.15 to 16.00 Place: Phys. Aud. Abstract: Cold molecules in the microkelvin-range can only been achieved starting with cold atoms. The method of producing cold molecules from cold atoms via photoassociation leads to the production of molecules in the ground state but in several vibrational levels. For additional applications, a major challenge is in the preparation, trapping and control of molecules in the ground vibrational and rotational state. The vibrational cooling through optical pumping using a shaped broadband femtosecond laser has been demonstrated for Cs2 molecules [1]. The molecules are initially formed in several vibrational levels, v, of the singlet ground state. A broadband femtosecond laser can electronically excite the molecules, leading via a few absorption - spontaneous emission cycles, to a redistribution of the vibrational population in the ground state. By removing the laser frequencies corresponding to the excitation of the v=0 level, we realize a dark state for the so-shaped femtosecond laser, yielding with the successive laser pulses to an accumulation of the molecules in the v=0 level, meaning vibrational cooling. The method of optical pumping using a shaped broadband laser is expected to be generally applicable to many molecular samples. The efficiency will depend on the relative strength of the transitions between vibrational levels of the concerned pairs of (ground-excited) electronic states. Recent developments of the method for targeting different vibrational levels [2] and for using a broadband incoherent light source [3] will be reported. The ongoing experiments devoted to the possibility for extending this method to rotational cooling will be discussed. Recent results of selective ionization spectroscopy of ground state molecular levels will also be presented. [1]. M. Viteau, A. Chotia, M. Allegrini, N. Bouloufa, O. Dulieu, D. Comparat and P. Pillet, Science 321, 232 (2008). [2]. D. Sofikitis, S. Weber, A. Fioretti, R. Horchani, M. Allegrini, B. Chatel, D. Comparat and P. Pillet, New J. Phys. 11, 055037 (2009). [3]. D. Sofikitis, R. Horchani, X. Li, M. Pichler, M. Allegrini, A. Fioretti, D. Comparat and P. Pillet, Phys. Rev. A 80 (5), 051401 (2009). Jacob Sherson and Aurélien Dantan Coffee, tea and cake will be served at 15.05 ----------------------------------- Aurelien Dantan Ion Trap Group Department of Physics and Astronomy University of Aarhus Ny Munkegade, bygn. 1520 8000 Aarhus Denmark +4589423602

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[vip-all] General Physics Colloquium today at 3:15 p.m.
by Kate Andersen 01 Feb '12

01 Feb '12

Title: Radiotherapy with Heavy Ion Beams at HIT Speaker: Oliver Jäkel, Heidelberg Ion Beam Therapy Center (HIT) and German Cancer Research Center (DKFZ), Heidelberg, Germany Time: Wednesday 1st February, 2012 at 3:15 p.m. Place: Physics Auditorium, 3rd floor, Department of Physics Abstract Since 1997, the Heidelberg University Hospital is the only hospital in Europe offering radiotherapy with Carbon ion beams. This therapy was available only for a very limited number of patients during a pilot project performed at the heavy Ion laboratory GSI (Gesellschaft für Schwerionen-forschung) in Darmstadt. This project was a joint research project with the University hospital Heidelberg, GSI and DKFZ. Up to 2008 440 patients had been treated with Carbon ions. Due to the very promising clinical results gained in that project, the construction of a hospital based facility for proton and ion beam therapy in Heidelberg was initiated by the project partners already in 1998. This Heidelberg Ion Beam Therapy center (HIT) started clinical operation in 2009 and is one of the leading institutions in this field worldwide. It features 3 treatment rooms as well as an experimental room, all equipped with a beam scanning system, allowing a highly precise beam delivery. In the first year of operation nearly 200 patients have already been treated mainly with carbon but also with pro-ton therapy. Besides these fixed beam rooms, also the worlds first heavy ion gantry is available. Irradiation, not only with protons and carbon ions, but also with helium or oxygen ions, is available for investigations of their radiobiological properties. To support image guided radiotherapy, robot based imaging and patient positioning systems are implemented. In my talks an overview will be given of the physical and clinical aspects of ion beam therapy as well as an overview over the HIT facility and the research perspectives in ion beam therapy. _____ Coffee/tea and cake will be served at 3 p.m. David Field

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