Working toward the vision of generating clean energy from nuclear fusion, researchers have successfully imploded fuel capsules by bombarding them with intense x-rays. The results show that the process generates significant fusion and that the implosion method looks capable of generating large-scale energy production.
The process works by bombarding two millimeter (about 1/16th inch) fuel capsules with intense x-rays from Sandia National Laboratories Z-pinch machine. The x-rays, impacting from all directions, cause an implosion that reduces the capsule’s size by a factor of ten (see images). This implosion needs to be symmetrical or else the capsules will break apart and fusion won’t take place. In one set of experiments, a high degree of symmetry has been achieved in the implosion process, indicating that the process might be scaled up to energy production levels. In another set of experiments using the Z-pinch, researchers observed significant production of neutrons, a sign of nuclear fusion.
These successful experiments are an important step toward ignition, the level at which the fusion reaction becomes self-sustaining and excess energy can be drawn from the process for other applications.
David Harris | EurekAlert!
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23.02.2018 | Max-Planck-Institut für Quantenoptik
A newly developed laser technology has enabled physicists in the Laboratory for Attosecond Physics (jointly run by LMU Munich and the Max Planck Institute of Quantum Optics) to generate attosecond bursts of high-energy photons of unprecedented intensity. This has made it possible to observe the interaction of multiple photons in a single such pulse with electrons in the inner orbital shell of an atom.
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A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.
By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...
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For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
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Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
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23.02.2018 | Physics and Astronomy