Using penumbral imaging to measure micrometer size plasma hot spots in Gbar equation of state experiments on the National Ignition Facility

2014 ◽  
Vol 85 (11) ◽  
pp. 11D614 ◽  
Author(s):  
B. Bachmann ◽  
A. L. Kritcher ◽  
L. R. Benedetti ◽  
R. W. Falcone ◽  
S. Glenn ◽  
...  
Keyword(s):  
Equation Of State ◽  
Hot Spots ◽  
National Ignition Facility ◽  
Penumbral Imaging ◽  
Micrometer Size

scholarly journals Using time-resolved penumbral imaging to measure low hot spot x-ray emission signals from capsule implosions at the National Ignition Facility

2018 ◽  
Vol 89 (10) ◽  
pp. 10G111 ◽  
Author(s):  
D. T. Bishel ◽  
B. Bachmann ◽  
A. Yi ◽  
D. Kraus ◽  
L. Divol ◽  
...  
Keyword(s):  
Hot Spot ◽  
National Ignition Facility ◽  
Time Resolved ◽  
X Ray ◽  
Penumbral Imaging

scholarly journals Non-equilibrium between ions and electrons inside hot spots from National Ignition Facility experiments

2017 ◽  
Vol 2 (1) ◽  
pp. 3-8 ◽  
Author(s):  
Zhengfeng Fan ◽  
Yuanyuan Liu ◽  
Bin Liu ◽  
Chengxin Yu ◽  
Ke Lan ◽  
...  
Keyword(s):  
Hot Spots ◽  
National Ignition Facility ◽  
Non Equilibrium

Quantifying equation-of-state and opacity errors using integrated supersonic diffusive radiation flow experiments on the National Ignition Facility

2015 ◽  
Vol 22 (4) ◽  
pp. 043303 ◽  
Author(s):  
T. M. Guymer ◽  
A. S. Moore ◽  
J. Morton ◽  
J. L. Kline ◽  
S. Allan ◽  
...  
Keyword(s):  
Equation Of State ◽  
National Ignition Facility ◽  
Flow Experiments

Precision equation-of-state measurements on National Ignition Facility ablator materials from 1 to 12 Mbar using laser-driven shock waves

2012 ◽  
Vol 111 (9) ◽  
pp. 093515 ◽  
Author(s):  
M. A. Barrios ◽  
T. R. Boehly ◽  
D. G. Hicks ◽  
D. E. Fratanduono ◽  
J. H. Eggert ◽  
...  
Keyword(s):  
Equation Of State ◽  
Shock Waves ◽  
National Ignition Facility

scholarly journals X-ray penumbral imaging diagnostic developments at the National Ignition Facility

2017 ◽  
Author(s):  
Sean J. Felker ◽  
Benjamin Bachmann ◽  
Hatim Abu Shawareb ◽  
Neil B. Alexander ◽  
Jay J. Ayers ◽  
...  
Keyword(s):  
National Ignition Facility ◽  
X Ray ◽  
Penumbral Imaging

scholarly journals Constraining the Neutron Star Mass–Radius Relation and Dense Matter Equation of State with NICER. II. Emission from Hot Spots on a Rapidly Rotating Neutron Star

2019 ◽  
Vol 887 (1) ◽  
pp. L26 ◽  
Author(s):  
Slavko Bogdanov ◽  
Frederick K. Lamb ◽  
Simin Mahmoodifar ◽  
M. Coleman Miller ◽  
Sharon M. Morsink ◽  
...  
Keyword(s):  
Neutron Star ◽  
Equation Of State ◽  
Hot Spots ◽  
Dense Matter ◽  
Star Mass ◽  
Neutron Star Mass

A high-performance oil-free backing pump for electron microscopes

1978 ◽  
Vol 36 (1) ◽  
pp. 110-111
Author(s):  
G.K.W. Balkau ◽  
E. Bez ◽  
J.L. Farrant
Keyword(s):  
Molecular Weight ◽  
Electron Microscope ◽  
Hot Spots ◽  
High Performance ◽  
Carbonaceous Material ◽  
Contamination Rate ◽  
Low Molecular Weight ◽  
Principal Source ◽  
Rotary Pumps ◽  
Electron Microscopes

The earliest account of the contamination of electron microscope specimens by the deposition of carbonaceous material during electron irradiation was published in 1947 by Watson who was then working in Canada. It was soon established that this carbonaceous material is formed from organic vapours, and it is now recognized that the principal source is the oil-sealed rotary pumps which provide the backing vacuum. It has been shown that the organic vapours consist of low molecular weight fragments of oil molecules which have been degraded at hot spots produced by friction between the vanes and the surfaces on which they slide. As satisfactory oil-free pumps are unavailable, it is standard electron microscope practice to reduce the partial pressure of organic vapours in the microscope in the vicinity of the specimen by using liquid-nitrogen cooled anti-contamination devices. Traps of this type are sufficient to reduce the contamination rate to about 0.1 Å per min, which is tolerable for many investigations.

Equation of state for hard convex body fluid mixtures

1998 ◽  
Vol 94 (5) ◽  
pp. 809-814 ◽  
Author(s):  
C. BARRIO ◽  
J.R. SOLANA
Keyword(s):  
Equation Of State ◽  
Convex Body ◽  
Body Fluid ◽  
Fluid Mixtures

World Bank pinpoints disaster hot spots

Nature ◽  
2005 ◽  
Author(s):  
Deirdre Lockwood
Keyword(s):  
World Bank ◽  
Hot Spots
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