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Showing 13 to 24 of 205 entries
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High-rhoR implosions for fast-ignition fuel assembly.

Physical review letters

Zhou CD, Theobald W, Betti R, Radha PB, Smalyuk VA, Shvarts D, Glebov VY, Stoeckl C, Anderson KS, Meyerhofer DD, Sangster TC, Li CK, Petrasso RD, Frenje JA, Seguin FH.
PMID: 17358616
Phys Rev Lett. 2007 Jan 12;98(2):025004. doi: 10.1103/PhysRevLett.98.025004. Epub 2007 Jan 11.

Thick, 40 microm plastic shells filled with 25-35 atm of D2 or D3He were imploded on a low-adiabat (alpha approximately 1.3) and with a low-implosion velocity ( approximately 2 x 10(70 cm/s) on the OMEGA laser to generate massive...

Effects of nonuniform illumination on implosion asymmetry in direct-drive inertial confinement fusion.

Physical review letters

Li CK, Séguin FH, Frenje JA, Petrasso RD, Delettrez JA, McKenty PW, Sangster TC, Keck RL, Soures JM, Marshall FJ, Meyerhofer DD, Goncharov VN, Knauer JP, Radha PB, Regan SP, Seka W.
PMID: 15169359
Phys Rev Lett. 2004 May 21;92(20):205001. doi: 10.1103/PhysRevLett.92.205001. Epub 2004 May 19.

Target areal density (rhoR) asymmetries in OMEGA direct-drive spherical implosions are studied. The rms variation / for low-mode-number structure is approximately proportional to the rms variation of on-target laser intensity / with an amplification factor of approximately 1/2(C(r)-1), where...

A high-resolution coherent transition radiation diagnostic for laser-produced electron transport studies (invited).

The Review of scientific instruments

Storm M, Begishev IA, Brown RJ, Guo C, Meyerhofer DD, Mileham C, Myatt JF, Nilson PM, Sangster TC, Stoeckl C, Theobald W, Zuegel JD.
PMID: 19044648
Rev Sci Instrum. 2008 Oct;79(10):10F503. doi: 10.1063/1.2953527.

High-resolution images of the rear-surface optical emission from high-intensity (I approximately 10(19) W/cm(2)) laser illuminated metal foils have been recorded using coherent transition radiation (CTR). CTR is generated as relativistic electrons, generated in high-intensity laser-plasma interactions, exit the target's...

A gated liquid-scintillator-based neutron detector for fast-ignitor experiments and down-scattered neutron measurements.

The Review of scientific instruments

Stoeckl C, Cruz M, Glebov VY, Knauer JP, Lauck R, Marshall K, Mileham C, Sangster TC, Theobald W.
PMID: 21033828
Rev Sci Instrum. 2010 Oct;81(10):10D302. doi: 10.1063/1.3466899.

The detection of neutrons in fast-ignitor experiments or down-scattered neutrons in inertial fusion experiments is very challenging since it requires the neutron detection system to recover within 10-100 ns from a high background orders of magnitude stronger than the...

Bone and joint tuberculosis in children in the Blackburn area since 2006: a case series.

Journal of children's orthopaedics

Holland TS, Sangster MJ, Paton RW, Ormerod LP.
PMID: 21286258
J Child Orthop. 2010 Feb;4(1):67-71. doi: 10.1007/s11832-009-0232-3. Epub 2010 Jan 10.

This report describes a series of four cases of children between the ages 5 and 14 years with bone or joint infection with Mycobacterium tuberculosis diagnosed between June 2006 and March 2008 in the Blackburn area of England. All...

Charged-particle spectroscopy for diagnosing shock ρR and strength in NIF implosions.

The Review of scientific instruments

Zylstra AB, Frenje JA, Séguin FH, Rosenberg MJ, Rinderknecht HG, Johnson MG, Casey DT, Sinenian N, Manuel MJ, Waugh CJ, Sio HW, Li CK, Petrasso RD, Friedrich S, Knittel K, Bionta R, McKernan M, Callahan D, Collins GW, Dewald E, Döppner T, Edwards MJ, Glenzer S, Hicks DG, Landen OL, London R, Mackinnon A, Meezan N, Prasad RR, Ralph J, Richardson M, Rygg JR, Sepke S, Weber S, Zacharias R, Moses E, Kilkenny J, Nikroo A, Sangster TC, Glebov V, Stoeckl C, Olson R, Leeper RJ, Kline J, Kyrala G, Wilson D.
PMID: 23126905
Rev Sci Instrum. 2012 Oct;83(10):10D901. doi: 10.1063/1.4729672.

The compact Wedge Range Filter (WRF) proton spectrometer was developed for OMEGA and transferred to the National Ignition Facility (NIF) as a National Ignition Campaign diagnostic. The WRF measures the spectrum of protons from D-(3)He reactions in tuning-campaign implosions...

Advances in compact proton spectrometers for inertial-confinement fusion and plasma nuclear science.

The Review of scientific instruments

Seguin FH, Sinenian N, Rosenberg M, Zylstra A, Manuel MJ, Sio H, Waugh C, Rinderknecht HG, Johnson MG, Frenje J, Li CK, Petrasso R, Sangster TC, Roberts S.
PMID: 23126911
Rev Sci Instrum. 2012 Oct;83(10):10D908. doi: 10.1063/1.4732065.

Compact wedge-range-filter proton spectrometers cover proton energies ∼3-20 MeV. They have been used at the OMEGA laser facility for more than a decade for measuring spectra of primary D(3)He protons in D(3)He implosions, secondary D(3)He protons in DD implosions,...

Scaling hot-electron generation to high-power, kilojoule-class laser-solid interactions.

Physical review letters

Nilson PM, Solodov AA, Myatt JF, Theobald W, Jaanimagi PA, Gao L, Stoeckl C, Craxton RS, Delettrez JA, Yaakobi B, Zuegel JD, Kruschwitz BE, Dorrer C, Kelly JH, Akli KU, Patel PK, Mackinnon AJ, Betti R, Sangster TC, Meyerhofer DD.
PMID: 21231472
Phys Rev Lett. 2010 Dec 03;105(23):235001. doi: 10.1103/PhysRevLett.105.235001. Epub 2010 Dec 01.

Thin-foil targets were irradiated with high-power (1 ≤ P(L) ≤ 210 TW), 10-ps pulses focused to intensities of I>10(18) W/cm(2) and studied with K-photon spectroscopy. Comparing the energy emitted in K photons to target-heating calculations shows a laser-energy-coupling efficiency...

A Freon-filled bubble chamber for neutron detection in inertial confinement fusion experiments.

The Review of scientific instruments

Ghilea MC, Meyerhofer DD, Sangster TC.
PMID: 21456730
Rev Sci Instrum. 2011 Mar;82(3):033305. doi: 10.1063/1.3554649.

Neutron imaging is one of the main methods used in inertial confinement fusion experiments to measure the core symmetry of target implosions. Previous studies have shown that bubble chambers have the potential to obtain higher resolution images of the...

Laser-beam zooming to mitigate crossed-beam energy losses in direct-drive implosions.

Physical review letters

Igumenshchev IV, Froula DH, Edgell DH, Goncharov VN, Kessler TJ, Marshall FJ, McCrory RL, McKenty PW, Meyerhofer DD, Michel DT, Sangster TC, Seka W, Skupsky S.
PMID: 25166997
Phys Rev Lett. 2013 Apr 05;110(14):145001. doi: 10.1103/PhysRevLett.110.145001. Epub 2013 Apr 01.

Spherically symmetric direct-drive-ignition designs driven by laser beams with a focal-spot size nearly equal to the target diameter suffer from energy losses due to crossed-beam energy transfer (CBET). Significant reduction of CBET and improvements in implosion hydrodynamic efficiency can...

A spherical crystal imager for OMEGA EP.

The Review of scientific instruments

Stoeckl C, Fiksel G, Guy D, Mileham C, Nilson PM, Sangster TC, Shoup MJ, Theobald W.
PMID: 22462906
Rev Sci Instrum. 2012 Mar;83(3):033107. doi: 10.1063/1.3693348.

A narrowband x ray imager for the Cu K(α) line at ~8 keV using a spherically bent quartz crystal has been implemented on the OMEGA EP laser at the University of Rochester. The quartz crystal is cut along the...

Host-isotope fine structure of the fundamental and second-harmonic transitions for the CAs local mode in GaAs.

Physical review. B, Condensed matter

Leigh RS, Sangster MJ.
PMID: 9986518
Phys Rev B Condens Matter. 1996 Aug 15;54(8):5562-5567. doi: 10.1103/physrevb.54.5562.

No abstract available.

Showing 13 to 24 of 205 entries