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Showing 1 to 12 of 18 entries
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Technique for fabrication of ultrathin foils in cylindrical geometry for liner-plasma implosion experiments with sub-megaampere currents.

The Review of scientific instruments

Yager-Elorriaga DA, Steiner AM, Patel SG, Jordan NM, Lau YY, Gilgenbach RM.
PMID: 26628134
Rev Sci Instrum. 2015 Nov;86(11):113506. doi: 10.1063/1.4935838.

In this work, we describe a technique for fabricating ultrathin foils in cylindrical geometry for liner-plasma implosion experiments using sub-MA currents. Liners are formed by wrapping a 400 nm, rectangular strip of aluminum foil around a dumbbell-shaped support structure...

[Those who are competent must be reinforced].

Pflege aktuell

Hilkenbach RM.
PMID: 14705369
Pflege Aktuell. 2003 Dec;57(12):645-50.

No abstract available.

Multipactor experiments on an S-band coaxial test cell.

The Review of scientific instruments

Langellotti SV, Jordan NM, Lau YY, Gilgenbach RM.
PMID: 34972392
Rev Sci Instrum. 2021 Dec 01;92(12):124706. doi: 10.1063/5.0074464.

Radio frequency vacuum electronics are prone to multipactor discharges. These electron discharges, driven by secondary electron emission, can disrupt and damage devices and are particularly important in satellite communication systems. We present results from a new S-band coaxial multipactor...

Optimization of switch diagnostics on the MAIZE linear transformer driver.

The Review of scientific instruments

Shah AP, Campbell PC, Miller SM, Woolstrum JM, Sporer BJ, Patel SG, Jordan NM, Gilgenbach RM, McBride RD.
PMID: 31893831
Rev Sci Instrum. 2019 Dec 01;90(12):124707. doi: 10.1063/1.5113866.

The MAIZE Linear Transformer Driver consists of 40 capacitor-switch-capacitor "bricks" connected in parallel. When these 40 bricks are charged to ±100-kV and then discharged synchronously, the MAIZE facility generates a 1-MA current pulse with a 100-ns rise time into...

Multipactor experiments on an S-band coaxial test cell.

The Review of scientific instruments

Langellotti SV, Jordan NM, Lau YY, Gilgenbach RM.
PMID: 34972392
Rev Sci Instrum. 2021 Dec 01;92(12):124706. doi: 10.1063/5.0074464.

Radio frequency vacuum electronics are prone to multipactor discharges. These electron discharges, driven by secondary electron emission, can disrupt and damage devices and are particularly important in satellite communication systems. We present results from a new S-band coaxial multipactor...

Effect of soft metal gasket contacts on contact resistance, energy deposition, and plasma expansion profile in a wire array Z pinch.

The Review of scientific instruments

Gomez MR, Zier JC, Gilgenbach RM, French DM, Tang W, Lau YY.
PMID: 19044418
Rev Sci Instrum. 2008 Sep;79(9):093512. doi: 10.1063/1.2991110.

Soft metal gaskets (indium and silver) were used to reduce contact resistance between the wire and the electrode in an aluminum wire Z pinch by more than an order of magnitude over the best weighted contact case. Clamping a...

Multipactor experiments on an S-band coaxial test cell.

The Review of scientific instruments

Langellotti SV, Jordan NM, Lau YY, Gilgenbach RM.
PMID: 34972392
Rev Sci Instrum. 2021 Dec 01;92(12):124706. doi: 10.1063/5.0074464.

Radio frequency vacuum electronics are prone to multipactor discharges. These electron discharges, driven by secondary electron emission, can disrupt and damage devices and are particularly important in satellite communication systems. We present results from a new S-band coaxial multipactor...

Metal-oxide-junction, triple point cathodes in a relativistic magnetron.

The Review of scientific instruments

Jordan NM, Gilgenbach RM, Hoff BW, Lau YY.
PMID: 18601427
Rev Sci Instrum. 2008 Jun;79(6):064705. doi: 10.1063/1.2939397.

Triple point, defined as the junction of metal, dielectric, and vacuum, is the location where electron emission is favored in the presence of a sufficiently strong electric field. To exploit triple point emission, metal-oxide-junction (MOJ) cathodes consisting of dielectric...

Anisotropy and feedthrough in magneto-Rayleigh-Taylor instability.

Physical review. E, Statistical, nonlinear, and soft matter physics

Lau YY, Zier JC, Rittersdorf IM, Weis MR, Gilgenbach RM.
PMID: 21797496
Phys Rev E Stat Nonlin Soft Matter Phys. 2011 Jun;83(6):066405. doi: 10.1103/PhysRevE.83.066405. Epub 2011 Jun 14.

The magneto-Rayleigh-Taylor instability (MRT) of a finite slab is studied analytically using the ideal MHD model. The slab may be accelerated by an arbitrary combination of magnetic pressure and fluid pressure, thus allowing an arbitrary degree of anisotropy intrinsic...

Absolute Instability near the Band Edge of Traveling-Wave Amplifiers.

Physical review letters

Hung DM, Rittersdorf IM, Zhang P, Chernin D, Lau YY, Antonsen TM, Luginsland JW, Simon DH, Gilgenbach RM.
PMID: 26430996
Phys Rev Lett. 2015 Sep 18;115(12):124801. doi: 10.1103/PhysRevLett.115.124801. Epub 2015 Sep 16.

Applying the Briggs-Bers "pole-pinch" criterion to the exact transcendental dispersion relation of a dielectric traveling wave tube (TWT), we find that there is no absolute instability regardless of the beam current. We extend this analysis to the circuit band...

Experimental reduction of beam-breakup instability growth by external cavity coupling in long-pulse electron-beam transport.

Physical review letters

Gilgenbach RM, Lau YY, Menge PR.
PMID: 10046468
Phys Rev Lett. 1992 Oct 19;69(16):2372-2375. doi: 10.1103/PhysRevLett.69.2372.

No abstract available.

Suppression of third-order intermodulation in a klystron by third-order injection.

Physical review letters

Bhattacharjee S, Marchewka C, Welter J, Kowalczyk R, Wilsen CB, Lau YY, Booske JH, Singh A, Scharer JE, Gilgenbach RM, Neumann MJ, Keyser MW.
PMID: 12689260
Phys Rev Lett. 2003 Mar 07;90(9):098303. doi: 10.1103/PhysRevLett.90.098303. Epub 2003 Mar 05.

The first observations and measurements are reported on suppression of the third-order intermodulation (IM3) product arising from nonlinear mixing of two drive frequencies in a klystron, by externally injecting a wave at the IM3 product frequency. Optimum amplitude and...

Showing 1 to 12 of 18 entries