asteroza + particle   66

Self-Guided Beamed Propulsion for Breakthrough Interstellar Missions | NASA
the neutral particle beam system is kinda interesting, laser doppler cooled supersonic alkali vapor jet
neutral  particle  beam  projector  alkali  vapor  jet  supersonic  laser  space  propulsion  research  technology  NIAC  physics  optics 
2 days ago by asteroza
Protecting the LHC from itself | symmetry magazine
Interesting that they have to spread out the beam first before hitting the dump, and the dump is made from a block of graphite. The quench protection via electrical dump to resistor grids is also interesting. I would have thought they might try to recover the power from the dump into some other storage, but I guess the safety criticality means they don't.
particle  accelertor  safety  beam  dump  design  engineering 
5 weeks ago by asteroza
MARS Bioimaging Ltd
New high resolution x-ray sensor that detects more accurately the strength per pixel allows effectively (false) color x-ray imaging.
x-ray  3D  color  high  resolution  imaging  sensor  medicine  health  energy  particle  spectral  CT  scan 
july 2018 by asteroza
PROCSIMA: Diffractionless Beamed Propulsion | NASA
Hybrid beamed propulsion rig, using favorable interactions between a neutral particle beam and a colinear laser to self focus and shepard the other.I wonder how applicable this is to conventional laser beam stuff (though the minimum beam strength probably stops anything less than a propulsion laser)
NASA  NIAC  beamed  propulsion  hybrid  neutral  particle  beam  laser  diffractionless 
april 2018 by asteroza
Transactions of the Symposium on Space Nuclear Power Systems, (5th) Held at Albuquerque, New Mexico on January 11, 1988. | National Technical Reports Library - NTIS
The PDF contains info on wheelguns, giant counterrotating flywheel hoops in space to supply power to SDI weapons, mainly railguns/particle accelerator cannons/free electron lasers that need huge amounts of power right now. Appears to expect to be trickle charged over time by a small space nuclear reactor (SNAP? atomic teakettle?). Also has an interesting microwave power beaming scenario from a nuke in mars synchronous orbit to a ground rover, high performance radiators, including a fabric heatpipe radiator, a curie point magnetic liquid droplet radiator, and other power conversion concepts.
SDI  wheelgun  space  counterrotating  flywheel  hoop  energy  storage  power  generator  FEL  free  electron  laser  railgun  neutraal  particle  accelerator  cannon  military  WPT  microwave  transmission  mars  MSO  rectenna  rotating  loop  pulsed  fabric  radiator  heat  thermal  management 
march 2018 by asteroza
Home
New boat hull antifouling paint using ceramic nanoparticles to make a surface so smooth that barnacles can bare stick, and even if they do you can wipe them off with a sponge
marine  antifouling  paint  polythiourethane  ceramic  particle  nanoparticle  materials  science  research  technology  germany  EU 
december 2017 by asteroza
falling-particle receiver – Sandia Energy
some sort of falling sand solar heat receiver, attempting to overcome some molten salt solar receiver limitations
Sandia  falling  particle  solar  thermal  heat  receiver  sand  heatsink  storage 
july 2017 by asteroza
Chinese researchers achieve breakthrough in nuclear energy - China.org.cn
So the main trick behind ADANES is using a tungsten grain based solid neutron spallation target that pumps like a liquid, giving fluid properties but solid heat capabilities (to better survive beam trip transients), and the potential to be a windowless particle beam target (improving lifetime).
china  ADS  ADSR  ADANES  accelerator  driven  subcritical  nuclear  reactor  power  generator  tungsten  grain  neutron  spallation  target  proton  accelerator  particle  Delicious 
june 2017 by asteroza
High thermal conductivity in polaritonic SiO2 nanoparticle beds - Materials Hori...
A heat transfer material that electrically insulates, apparently the surface phonon effect starts at 50C, so easy to use with electronics.
silicon  dioxide  SiO2  nanoparticle  packed  particle  bed  thermal  conductor  surface  phonon  polariton  macroscopic  heat  transfer  ethylene  glycol  cooling  Delicious 
july 2016 by asteroza
Phys. Rev. Lett. 115, 194802 (2015) - Multi-MeV Electron Acceleration by Subterawatt Laser Pulses
So they are using a lesser plasma to be a gain medium for a laser, to make a more laser, to make a stronger plasma wakefield, for a particle accelerator. Rather than starting out with a really powerful laser. Implies tabletop accelerator may be easier now.
plasma  wake  wakefield  particle  accelerator  research  laser  gain  medium  physics  technology  Delicious 
november 2015 by asteroza
Terahertz-driven linear electron acceleration : Nature Communications : Nature Publishing Group
Interesting new take on linear accelerators, possible x100 improvement leading to free electron x-ray lasers...
terahertz  RF  wave  linear  particle  electron  accelerator  physics  research  technology  hardware  electronics  devices  Delicious 
october 2015 by asteroza
Locally and Dynamically Controllable Surface Topography Through the Use of Particle-Enhanced Soft Composites - Guttag - 2015 - Advanced Functional Materials - Wiley Online Library
So unstretched/uncompressed elastomer has smooth and flat surface, but by compressing or stretching it, embedded hard particles cause surface deformation. Useful for things like tactile interfaces, surface drag reduction, anything that involves surface features. The tactile interface usage will probably be used for adult toys though...
variable  topography  surface  finish  texture  materials  science  research  technology  3D  printing  fabbing  elastomeric  matrix  hard  particle  composite  reversible  ondemand  Delicious 
june 2015 by asteroza
Simultaneous Enhancement of Electrical Conductivity and Thermopower of Bi2Te3 by Multifunctionality of Native Defects - Suh - 2015 - Advanced Materials - Wiley Online Library
Apparently tweaked alpha particle irradiation of thermoelectric thin films yields improved performance due to selective crystal defects. Apparently the best ZT they've seen in bismuth-telluride thermoelectrics.
alpha  particle  irradiation  thermoelectric  native  defect  control  materials  science  research  technology  thin  fim  power  generator  Delicious 
may 2015 by asteroza
European Space Agency Awards €500k for New Cold Spray 3D Printing Technology
Interesting, using cold helium to increase the speed of sound of the neutral carrier gas for a metal powder spray, so it uses impact bonding rather than some kind of laser heating.
3D  printing  fabbing  manufacturing  technique  supersonic  titanium  particle  powder  cold  spray  coating  helium  carrier  gas  metal  Delicious 
january 2015 by asteroza
Twin Creeks Technologies
GTAT (of Apple sapphire fame) acquired these guys and improved on their high current/energy particle accelerator tech. Allegedly 10x better than equivalent accelerators and very compact at version 3. Should be useful as an injector stage for a larger particle accelerator.
hyperion  ion  implanter  proton  particle  accelerator  wafer  exfoliation  thin  research  technology  Delicious 
october 2014 by asteroza
mozab1_talk.pdf
TRU burner ADSR molten salt reactor design, using triple strong focus cyclotrons and a sodium chloride salt. Kinda interesting in comparison to various lead cooled FFAG type ADSR's.
ADSR  strong  focus  cyclotron  particle  proton  accelerator  driven  subcritical  molten  sodium  chloride  salt  core  nuclear  reactor  Delicious 
january 2014 by asteroza
Phys. Rev. Lett. 111, 134803 (2013): Laser-Based Acceleration of Nonrelativistic Electrons at a Dielectric Structure
Interesting zero to fast electron accelerator research, which would dovetail nicely with that recent work for accelerating near relativistic electrons. Surface waves, so surface plasmons?
fused  particle  technology  physics  silica  electron  grating  boost  laser  dielectric  research  accelerator  Delicious 
october 2013 by asteroza
Stanford, SLAC researchers demonstrate 'accelerator on a chip'
Interesting chip scale electron accelerator, but requires high input speed. Usable for a final stage in a multi-stage accelerator?
chip  particle  scale  technology  physics  electron  IR  boost  laser  research  accelerator  Delicious 
september 2013 by asteroza
:: University of Southampton
New tricks to get fiber lasers working together in concert, with high wavelength sync. With pulse fiber lasers, the potential exists to create very high performance laser particle accelerators, with lengths measured in cm, not km. Of course, this has potential for other applications involving high power and duration lasers.
amplification  technology  hardware  optics  physics  ICAN  pulse  fiber  research  accelerator  network  particle  laser  coherent  devices  array  electronics  Delicious 
april 2013 by asteroza
Phys. Rev. Lett. 109, 244801 (2012): Can a Metal Surface Repel Electric Charges?
Basically, a long cylinder shaped charge packet traveling fast enough is repelled from surrounding materials (including conductive metals) if it is traveling fast enough oriented along the long axis. Which basically means accelerator design improvements to reduce required hardware may be possible.
accelerator  repulsion  packet  charge  research  physics  particle  Delicious 
january 2013 by asteroza
pbpl - papers: show
Chip scale particle accelerator using a laser resonant cavity. Could get up to 1GEv acceleration.
platform  assist  laser  technology  research  accelerator  particle  scale  chip  Delicious 
april 2012 by asteroza
Fluidized Bed Nuclear Reactor
Interesting alternative design usage for fuel pebbles in a nuclear reactor.

But, as my nuclear engineering student friend said, "Ow, my balls"...
fludized  bed  fuel  particle  pebble  ball  nuclear  reactor  concept  design  SMR  power  generator  Delicious 
february 2012 by asteroza
Spray On Kit
Apparently this is the real deal, a nanoparticle/nanocapacitor suspension paint. A spray on paint kit to create either a conformal antenna or to enhance an existing antenna. They painted a tree and were able to send VHF signals 14 miles. Boosting existing antennas is anywhere from 10% to 40% (40% was 20dBm for an iPhone 3 test). The videos also talk about potential uses in other EMF applications, such as (?AC) electric motor windings.
surface  aftermarket  spray  coating  antenna  booster  paint  conformal  military  communications  technology  iPhone  kit  nanoparticle  particle  suspension  colloid  capacitor  nanocapacitor  materials  science  research  nanotechnology  Delicious 
february 2012 by asteroza
British to Test Geoengineering Scheme - Technology Review
I think the geoengineering test results will probably be inconclusive due to scale, but the materials science and manufacturing research to make the early test's 1Km tall water pipe, and the projected follow on 20km tall vertical pipe for sulfur dioxide particles is more applicable to other industries. The 20 Km pipe would face a minimum raw 6000 bar pressure at the base, and there are wind/torsion loads too. That assumes it is one monolithic pipe though. Easy trick is embedding an electric cable/tether, and putting electric boost pumps at intervals so the bottom raw pressure is less.
geoengineering  terraforming  climate  control  alteration  test  experiment  LTA  vertical  water  pipe  stratospheric  particle  injection  engineering  research  materials  science  manufacturing  Delicious 
september 2011 by asteroza
LinkClick.aspx (application/pdf Object)
Using alumina particle solid media in a gas working fluid thermal energy storage setup with cyclical counter current heat exchangers. Sounds like the Isentropic Energy guys with their gravel heat store.
counter  current  cyclic  heat  exchanger  thermal  energy  storage  concept  alumina  particle  solid  media  gas  working  fluid  Delicious 
june 2011 by asteroza
First Defense Nasal Screens
Hrm, interesting, but does squat for your eyes and mouth though...
nasal  screen  filter  patch  health  medicine  safety  air  particle  particulate  protection  defense  emergency  survival  Delicious 
april 2011 by asteroza
Radiation Remediation
It's like a Roomba for the Van Allen belts! Which actually has long term policy implications, much like orbital debris cleanup. This would potentially make very low thrust propulsion like Hall effect much more viable for the GTO market, compared to now where you need chemical, VASIMR, solar thermal, or nuclear thermal thrust levels to cut transit times. Won't do anything about getting cooked by hard solar wind and cosmic radiation, but that's always been a time/shielding critical issue anyways.
HiVOLT  tether  van  allen  radiation  belt  dispersal  spacecraft  system  electrostatic  particle  deflector  Delicious 
march 2011 by asteroza

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