Plasma is formed in both chambers of the two-chamber device, but potentials on the three electrodes between the chambers ensure that only electrons exit the left chamber, while positive ions are kept out. The positive beam is formed in the chamber on the left, and both beams are extracted by the accelerator column, far right.
An Imprinter that Combines Electron and Ion Beams Opens the Way for Wider Applications
An ion-beam system that simultaneously combines focused beams of electrons and positive ions promises to improve the versatility, efficiency, and economy of this important technology. The new system was developed by researchers at the Department of Energy’s Lawrence Berkeley National Laboratory, who report its principles and applications in the November 8, 2004 issue of Applied Physics Letters.
Focused ion beams are important in the semiconductor industry, where they are used to carve structures with dimensions measured in billionths of a meter, repair defects in masks used for photolithography, isolate and analyze elements of integrated circuits, "dope" semiconductors with specific atomic species, and perform other tasks.
Paul Preuss | EurekAlert!
Basque researchers turn light upside down
23.02.2018 | Elhuyar Fundazioa
Attoseconds break into atomic interior
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.
In order to observe the ultrafast electron motion in the inner shells of atoms with short light pulses, the pulses must not only be ultrashort, but very...
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...
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...
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.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
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
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23.02.2018 | Physics and Astronomy