Navigation Links
A supercharged metal-ion generator
Date:1/29/2009

et, it becomes self-sustaining. The magnetic field lines near the target grow thick with spiraling electrons, the plasma is dominated by metal ions instead of gas, and the sheath becomes a potent source of a large flux of energetic electrons that produce still more "excess" plasma the system runs away, until it finally reaches a new equilibrium at a much higher peak-power level than before.

Achieving equilibrium

"Three quantities determine the self-sputtering threshold," Anders explains. "One is the probability that a sputtered atom gets ionized. Another is the probability that the new ion returns to the target. Finally, there's the actual yield of atoms from self-sputtering. Multiply these together and you get the self-sputtering parameter, which is symbolized by the Greek letter pi" Π "When pi equals unity, you reach a new steady state," provided, that is, "that the power supply can keep up."

Which is why, says Anders, "we use a special power supply, up to 500 kilowatts peak power. If the system wants power, we give it power!"

Using a copper target in their HIPIMS system, Andersson and Anders found that the ion current to the collector increased exponentially as the discharge voltage was increased. Far above the threshold of self-sputtering, the ion current to the substrate greatly exceeded the discharge current a result that came as a surprise to a number of their peers.

"But this really doesn't require any new physics," Anders says. "The ions are generated by the energy invested, not by the current. We provide both high voltage and high current, the product of which is power, so we give the self-sputtering system enough power" energy per time "to generate a large amount of ions. It's perfectly compatible with energy conservation or any other law of physics."

In their experiment Andersson and Anders used no process gas at all, but instead kick-started their system with very short arc pul
'/>"/>

Contact: Paul Preuss
paul_preuss@lbl.gov
510-486-6249
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert

Page: 1 2 3 4 5

Related biology technology :

1. Nu Skin Scientists Correlate the Appearance of Aging With arNOX Free Radical Generator
2. New small-scale generator produces alternating current by stretching zinc oxide wires
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/23/2014)... Inc. (NASDAQ: SGMO ) today reported its ... For the second quarter ended June 30, 2014, ... or $0.10 per share, compared to a net loss ... same period in 2013. As of June 30, 2014, ... interest receivable of $236.7 million. Revenues for ...
(Date:7/23/2014)... the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), the Vienna University of ... succeeded in embedding nearly perfect semiconductor crystals into ... producing hybrid nanowires, very fast and multi-functional processing ... in the future. The research results will be ... , Nano-optoelectronics are considered the cornerstone of future ...
(Date:7/23/2014)... Columbia, MD (PRWEB) July 23, 2014 ... Station, an LC/MS amino acid analysis system developed ... analysis, the UF-Amino Station can analyze 38 amino ... , The UF-Amino Station achieves high-speed analysis utilizing ... spectrometer. The LCMS-2020 provides accurate analytical results even ...
(Date:7/23/2014)... de julio de 2014 ADB International ... ha anunciado hoy una asociación con Austen BioInnovation ... o el Instituto), para el propósito de llevar ... terapia de señal bioeléctrica (el E-QURE BST Device), ... que tiene una importante experiencia en cicatrización de ...
Breaking Biology Technology:Sangamo BioSciences Reports Second Quarter 2014 Financial Results 2Sangamo BioSciences Reports Second Quarter 2014 Financial Results 3Sangamo BioSciences Reports Second Quarter 2014 Financial Results 4Sangamo BioSciences Reports Second Quarter 2014 Financial Results 5Sangamo BioSciences Reports Second Quarter 2014 Financial Results 6Sangamo BioSciences Reports Second Quarter 2014 Financial Results 7Sangamo BioSciences Reports Second Quarter 2014 Financial Results 8Sangamo BioSciences Reports Second Quarter 2014 Financial Results 9A crystal wedding in the nanocosmos 2Shimadzu's New UF-Amino Station Provides High-Speed, Multi-Component Analysis of Amino Acids in Food & Beverage and Pharmaceutical Testing 2ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 2ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 3ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 4ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 5ADB International Group Inc. anuncia una asociación con Austen BioInnovation Institute 6
... technology job market these days is an exercise in faith. Every day, ... truly turning around. , ,At the same time, lots of people ... we tell them about jobs we've spotted, they say to us: "Yes, ... or Monster.com ) you wrote to me about but I'm ...
... the last few weeks journalists and industry forecasters have ... big technological breakthrough for 2004. Many people wonder: Is ... the next big thing? According to Scott ... for the UW-Madison school of business, discussed a model ...
... Fiserv Inc. acquired RegEd Inc. for an undisclosed amount ... and Chief Executive Officer Leslie Muma , allow Fiserv ... acquisition, RegEd will take over the operations of Emerald Learning ... insurance and securities industries. All of RegEds 75 employees are ...
Cached Biology Technology:Pity the Midwest Technology Sales Guy 2Pity the Midwest Technology Sales Guy 3Pity the Midwest Technology Sales Guy 4Pity the Midwest Technology Sales Guy 5Identify Disruptive Technologies and Find the Next Big Thing 2Identify Disruptive Technologies and Find the Next Big Thing 3
(Date:7/23/2014)... , , , , ... , , , AUDIO: ... they argue, would be to target the... , , Click ... , , , , , ... , , , , , , Medicine focuses almost entirely on fighting chronic diseases ...
(Date:7/23/2014)... German . , ... processes and transmit signals. To perform these manifold tasks, ... Max Planck Institute for Developmental Biology in Tbingen have ... amino acid chains even when their three-dimensional shapes differ ... arose from common precursors. Presumably, in the course of ...
(Date:7/23/2014)... increase in temperature around the world by 2050, according ... Panel on Climate Change (IPCC), may be advantageous to ... in the growth of forage plants such as ... grazing in tropical countries such as Brazil., The conclusion ... the Department of Biology at the Ribeiro Preto Faculty ...
Breaking Biology News(10 mins):Strategy proposed for preventing diseases of aging 2Strategy proposed for preventing diseases of aging 3Strategy proposed for preventing diseases of aging 4Strategy proposed for preventing diseases of aging 5Protein evolution follows a modular principle 2An increase in temperature by 2050 may be advantageous to the growth of forage plants 2An increase in temperature by 2050 may be advantageous to the growth of forage plants 3An increase in temperature by 2050 may be advantageous to the growth of forage plants 4
... in boy and girl varieties, but they do have sex ... Center shows that some of the earliest evolved forms of ... animals, including that distant cousin of fungus, the human. ... genes from one of the oldest known types of fungi, ...
... and Kent State Universitys Liquid Crystal Institute - recognized ... the field - today announced a partnership to design ... By combining the expertise of the Garden ... sunlight, extending the plant growing season and conserving energy. ...
... SEOUL, South Korea, Jan. 8 Pixelplus ... semiconductor company in Korea that designs,develops, and ... electronics,applications, today announced that it unveiled the ... various image recognition,applications., The PM1002 integrates ...
Cached Biology News:Evolution of the sexes: What a fungus can tell us 2Research project aims to control sunlight, extend growing season and conserve energy 2Pixelplus Unveils Its PM1002 as A Practical Biometric Solution for Iris, Facial and Fingerprint Recognition 2Pixelplus Unveils Its PM1002 as A Practical Biometric Solution for Iris, Facial and Fingerprint Recognition 3
... assay for mitochondrial membrane potential detection ... are detected by carboxyfluorescein (FAM)-labelled fluoromethylketone ... non-cytotoxic and bind covalently to the ... the same time the mitochondrial membrane ...
... DMEM and harvested at the log phase of ... in their native forms, cells were fixed in ... 12-well (5 mm) adhesive coated slide, with each ... and to minimize background staining. Each well ...
... The CopyControl™ vector can be induced prior ... vectors provide the stability of single-copy BACs ... or other cloning vectors. The kits provide ... reagents, insert size screening system) necessary to ...
... can be induced prior to DNA purification ... stability of single-copy BACs with the high ... vectors. The kits provide the linearized vector ... screening system) necessary to create a 10X ...
Biology Products: