IFT POSTEN - DATO

IFT POSTEN – 15.05.2008

Fra Instituttledelsen

I dag er den store festdagen for instituttet – hurra hurra hurra. Jeg anmoder ALLE til å stille på fagseminaret som starter kl. 12.00!

Jubileumsgratulasjon også til Raymond Nepstad et al., nyslått doctor Kristian Snekkvik et al., Lars Egil Helseth og Babar medlemmer for nye spennende bidrag til verdenslitteraturen. Uken har ellers vært strålende med en rekke gode nyheter som vil bli behørig omtalt i rett tid. Men vi kan allerede nå gratulere Heidi Sandaker med finaleplass sammen med fem andre i årets spesielt harde konkurranse om midler fra Bergen Forskningsstiftelse – stå på Heidi!

Jan Petter

Nyheter og generell informasjon

GammaSem- seminarium för brukare av gammaspektrometri.

Vi samlas 16-17 september på Kjeller (IFE) för att diskutera och dela information om vårt bruk av gammaspektrometri. Fokus kommer att ligga på den praktiska kunskapen som deltagarna besitter och de gemensamma problemen och utmaningar som finns. Målet med seminariet är att skapa ett forum för vidare diskution och samarbete om gammaspektrometri. Seminariet sponsras av NKS (Nordisk kjernesikkerhetsforskning, www.nks.org).

Mer info: http://www.ift.uib.no/~janp/IFT09/gamsem.pdf

Paula Nunez

paulan@ife.no

"Qualitative Camp" Qualitative research methods and design 10-14th of August 2009

Bodø Graduate School of Business takes great pleasure in inviting you to the 7th Qualitative Camp in beautiful surroundings in Henningsvær, Lofoten Islands, 10-14th August 2009. The course is designed to make students/researchers familiar with different aspects of qualitative research methods and design, and to discuss this in relation to their own research projects.

For further information please go to the following webpage:

http://www.hhb.no/index.php?ID=1754

For further information please contact:

Jan-Oddvar Sørnes, Phd

jan.oddvar.soernes@hibo.no

Ledergruppemøte 6 – 2009

Referat og saksliste kan lastes fra http://www.ift.uib.no/~janp/IFT09/leder6.pdf

Neste møte i ledergruppen finner sted 14. mai kl. 09.00

Personal

Kopiering av emneinformasjon -Til emneansvarlige høsten 2009

Det er opp til hvert institutt/faglærer å vurdere om dere skal benytte anledningen til å kopiere emneinfo mellom inneværende/tidligere semester til kommende semester. Dersom dette skal gjøres må du gi beskjed til studieveileder Hanne innen mandag 18.mai.

I forkant av hvert semester er det altså mulig å kopiere informasjon fra forrige gang emnet ble undervist. Det er helst i spesielle situasjoner at det er lurt å kopiere denne informasjonen, feks dersom det er en stor og gjennomarbeidet FAQ eller undergruppestruktur på emnet.

I fillageret ligger ofte forelesningsnotater og de færreste er interessert i at hele forelesningsrekken, eller en emneevaluering publiseres før oppstart. Husk at det er viktig å sjekke FAQ som kopieres - kanskje innholder de udatert info (for eksempel datoer).

Emneansvarlig/administratorer kan hente opp aktuelle filer fra forrige semester ved å logge seg inn/legge seg inn som medlem på det aktuelle semesteret. Dette kan også studenter som er interessert å vite mer om et emne gjøre.

Ledige stilling:

Stipendiat i akustikk: frist 08.06.2009. https://secure.jobbnorge.no/visstilling2.aspx?stillid=57844

Nytilsatt:

Ashok Chejara er tilsatt som NFR-stipendiat i prosessteknologi i 3 år fom 15.05.2009.

Formidling

60-års omtalen av IFT i local www:

http://www.uib.no/matnat/nyheter/2009/05/60-aars-jubilanten

Bergens Tidende
Tittel: Solen sover, solen sover...
Solen oppfører seg slett ikke som forventet – i hele fjor og så langt i år har aktiviteten vært uvanlig lav.

Teknisk ukeblad
Tittel: Bråstopp for hydrogenbiler
Samtidig som den norske Hydrogenveien åpnet, stanser USA bevilgningene til sin hydrogensatsing på bil.

Elektronikknett
Tittel: Åpner laboratorium for nanoteknologi
I morgen tirsdag foretas den offisielle åpningen av et nytt renrom for nanoteknologisk forskning ved NTNU.

Fra Physics World – newswire:

Antarctic input to rising oceans 'overestimated'

Study halves previous estimates of western Antarctic ice sheet’s

contribution to sea-level rise

http://physicsworld.com/cws/article/news/39081

Bright white light from organic LEDs

Physicists switch on energy efficient light bulb made from organic phosphor

http://physicsworld.com/cws/article/news/39082

Europe launches cosmic explorers

Herschel and Planck satellites to investigate the early universe

http://physicsworld.com/cws/article/news/39077

Mott insulator stores light

Pulse stored for a quarter of a second in atomic gas

http://physicsworld.com/cws/article/news/39067

Astronauts set to upgrade Hubble

New instruments will study universe 500 million years after the Big Bang

http://physicsworld.com/cws/article/news/39051

Nano-lamp illuminates quantum-classical boundary

Filament is just 100 atoms wide

http://physicsworld.com/cws/article/news/39039

Austrian physicists protest at CERN pull-out

Online petition started as up to 170 particle physicists could be affected

http://physicsworld.com/cws/article/news/39036

Large graphene samples could boost carbon electronics

New growth technique uses copper

http://physicsworld.com/cws/article/news/39035

Nano-box breaks size records

DNA origami makes smallest box – and largest self-assembled structure

http://physicsworld.com/cws/article/news/39026

GUEST BLOG:

Keep up-to-date with all things astronomical with our guest blog COSMIC

DIARY

http://www.cosmicdiary.org/

PHYSICSWORLD.COM BLOG

What do they think at CERN?

No, not about the Austrian pull-out - Angels and Demons...

http://physicsworld.com/blog/2009/05/what_do_they_think_at_cern.html

Sexy physicists and a plot to destroy the Vatican

I met a bunch of CERN physicists at a bar in Bristol...

http://physicsworld.com/blog/2009/05/sexy_physicists_corrupt_priest.html

Super-thin supersolid points to superglass

Disorder seems to be the key...

http://physicsworld.com/blog/2009/05/super-thin_supersolids_disagre.html

Weird, but it might just work

Musings over saffron risotto...

http://physicsworld.com/blog/2009/05/by_matin_durrani_its_amazing.html

The third industrial revolution

Time to rig that wind turbine on my roof...

http://physicsworld.com/blog/2009/05/the_third_industrial_revolutio.html

IFT - Publikasjoner fra lSI - Web of Knowledge

Quantum control of coupled two-electron dynamics in quantum dots
Author(s): Nepstad R, Saelen L, Degani I, et al.
Source: JOURNAL OF PHYSICS-CONDENSED MATTER Volume: 21 Issue: 21 Article Number: 215501 Published: MAY 27 2009

Abstract: We investigate optimal control strategies for state to state transitions in a model of a quantum dot molecule containing two active strongly interacting electrons. The Schrodinger equation is solved nonperturbatively in conjunction with several quantum control strategies. This results in optimized electric pulses in the terahertz regime which can populate combinations of states with very short transition times. The speed-up compared to intuitively constructed pulses is an order of magnitude. We furthermore make use of optimized pulse control in the simulation of an experimental preparation of the molecular quantum dot system. It is shown that exclusive population of certain excited states leads to a complete suppression of spin dephasing, as was indicated in Nepstad et al (2008 Phys. Rev. B 77 125315).¨

Optical sensor for detecting colloidal phase transitions induced by magnetic fields
Author(s): Helseth LE
Source: JOURNAL OF PHYSICS D-APPLIED PHYSICS Volume: 42 Issue: 10 Article Number: 105005 Published: MAY 21 2009

Abstract: In this paper we present the application of a new optical sensor for monitoring colloidal phase transitions in magnetic fields. The sensor utilizes the fact that the absorption of light depends strongly on the colloidal structure, and we demonstrate how it can be used to monitor magnetically induced phase transitions in colloidal solutions. Both static and dynamic response curves are recorded, thus providing useful information about the structural rearrangement. We find that the optical transmittance versus the magnetic field is path dependent for larger particles, and therefore depends on the history of the colloidal system. Furthermore, it is revealed that the colloidal assemblies exhibit memory-dependent kinetics, where the response times may differ by more than a factor of 5. We apply the sensor to study the kinetics of colloidal structural arrangement in a polymer solution, and find that the optical transmittance modulation decays with time, thus suggesting an increase in the number of immobile aggregates forced by the applied magnetic field.

Reconnection Hall current system observed in the magnetotail and in the ionosphere
Author(s): Snekvik K, Juusola L, Ostgaard N, et al.
Source: GEOPHYSICAL RESEARCH LETTERS Volume: 36 Article Number: L08104 Published: APR 21 2009

Abstract: On 07 Sep 2001 around 21: 40 UT, Cluster was located 19 R-E downtail, and observed earthward fast flows and strong perturbations in the dawn-dusk component of the magnetic field (B-Y). The perturbations corresponded to a sheet of tailward field aligned current close to the neutral sheet and another sheet of earthward field aligned current closer to the lobe. At Cluster footpoint, the ionospheric equivalent current density was monitored by the IMAGE magnetometer network. The observed equivalent current pattern is found to be consistent with a longitudinally extended current out of the ionosphere at 67 degrees magnetic latitude and another sheet into the ionosphere 10 km further north. These observations provide evidence that the Hall current system generated in the ion diffusion region of a tail reconnection X-line, can close in the ionosphere. Citation: Snekvik, K., L. Juusola, N. Ostgaard, and O. Amm (2009), Reconnection Hall current system observed in the magnetotail and in the ionosphere, Geophys. Res. Lett., 36, L08104, doi: 10.1029/2009GL037239.

Measurement of B -> X gamma Decays and Determination of |V-td/V-ts|
Author(s): BABBAR - Aubert B, Bona M, Karyotakis Y, et al.
Source: PHYSICAL REVIEW LETTERS Volume: 102 Issue: 16 Article Number: 161803 Published: APR 24 2009

Abstract: Using a sample of 383x10(6) BB events collected by the BABAR experiment, we measure sums of seven exclusive final states B -> X-d(s)gamma, where X-d(X-s) is a nonstrange (strange) charmless hadronic system in the mass range 0.6-1.8 GeV/c(2). After correcting for unmeasured decay modes in this mass range, we obtain a branching fraction for b -> d gamma of (7.2 +/- 2.7(stat)+/- 2.3(syst))x10(-6). Taking the ratio of X-d to X-s we find Gamma(b -> d gamma)/Gamma(b -> s gamma)=0.033 +/- 0.013(stat)+/- 0.009(syst), from which we determine |V-td/V-ts|=0.177 +/- 0.043.