As particle accelerators risk becoming unmanageably big and expensive to build and run, a team of European physicists hopes to solve the problem with a new accelerator design based on simple fiber-optic lasers.
Author: Daniel Clery
In science news around the world this week, a new report has recommended changes for the U.S. Department of Energy's national laboratories, the Japanese minister for economic revitalization is defending the emphasis on targeted research, a House of Representatives panel wants NASA to make changes, and airborne laser imaging has revealed the imprint of a cityscape around Angkor Wat.
Intense infrared lasers can be used to control the spectral line shapes of atoms, with implications for spectroscopy and quantum dynamical processes. [Also see Report by Ott et al.]
Authors: C. D. Lin, Wei-Chun Chu
A powerful x-ray laser source can extract the geometry and electronic structure of metalloenzymes prior to damaging them.
Authors: Jan Kern, Roberto Alonso-Mori, Rosalie Tran, Johan Hattne, Richard J. Gildea, Nathaniel Echols, Carina Glöckner, Julia Hellmich, Hartawan Laksmono, Raymond G. Sierra, Benedikt Lassalle-Kaiser, Sergey Koroidov, Alyssa Lampe, Guangye Han, Sheraz Gul, Dörte DiFiore, Despina Milathianaki, Alan R. Fry, Alan Miahnahri, Donald W. Schafer, Marc Messerschmidt, M. Marvin Seibert, Jason E. Koglin, Dimosthenis Sokaras, Tsu-Chien Weng, Jonas Sellberg, Matthew J. Latimer, Ralf W. Grosse-Kunstleve, Petrus H. Zwart, William E. White, Pieter Glatzel, Paul D. Adams, Michael J. Bogan, Garth J. Williams, Sébastien Boutet, Johannes Messinger, Athina Zouni, Nicholas K. Sauter, Vittal K. Yachandra, Uwe Bergmann, Junko Yano
Paul Corkum and Ferenc Krausz have won the 2013 King Faisal International Prize for Science for their independent work on ultrashort pulses of laser light; Jeffrey Michael Friedman and Douglas Coleman share the 2013 King Faisal International Prize for Medicine for their pioneering work together on the hormone leptin and the genetics of obesity; and David Evans has been named the new executive director of the National Science Teachers Association.
Femtosecond pulses from an x-ray laser are used to solve the room-temperature structure of a protein. [Also see Report by Redecke et al.]
Author: John R. Helliwell
The National Ignition Facility faces an uncertain future after its managers admitted to Congress this month that they need at least another 3 years to try to identify what has prevented the giant laser fusion lab in California from achieving ignition.
Author: Daniel Clery
A remarkable new method to prepare single strands of ancient DNA and view their genomes topped the list of this year's runners-up for Breakthrough of the Year, along with important discoveries into transcription activator–like effector nucleases, neutrino physics, Majorana fermions, the production of eggs cells from stem cells, and brain-machine interfaces. Other notable advances involve the Encyclopedia of DNA Elements, the Mars Curiosity rover, and the use of x-ray lasers to determine protein structure.
For the first time, an ultraintense x-ray laser has revealed the previously unknown atomic-scale structure of a protein, researchers report online today in Science.
Author: Adrian Cho
Laser-based photoemission spectroscopy is used to map out the pairing gap of an iron-based superconductor.
Authors: K. Okazaki, Y. Ota, Y. Kotani, W. Malaeb, Y. Ishida, T. Shimojima, T. Kiss, S. Watanabe, C.-T. Chen, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki, T. Saito, H. Fukazawa, Y. Kohori, K. Hashimoto, T. Shibauchi, Y. Matsuda, H. Ikeda, H. Miyahara, R. Arita, A. Chainani, S. Shin