Formulas for Fabry–Perot velocimeter performance using both stripe and multifrequency techniques

Goosman, D.R.

doi:10.1364/ao.30.003907

Cited by 17 publications

(12 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To accurately record the reaction zone and early reaction product expansion states attained in TATB detonation waves, two series of laser interferometric experiments are reported using a Fabry-Perot system that has an initial time resolution of approximately 5 ns and records for several s. 34 Most of these experiments used LX-17, a plastic bonded explosive containing 92.5 wt % TATB and 7.5 wt % KelF 800 binder (C 8 H 2 Cl 3 F 11 ) pressed to a density of 1.905 g/cm 3 ͑98% of the theoretical maximum density͒. Some of the experiments used pure ultrafine TATB pressed to a density of 1.80 g/cm 3 ͑93% of the theoretical maximum density͒.…”

Section: Introductionmentioning

confidence: 99%

Detonation waves in triaminotrinitrobenzene

Tarver

Kury

Breithaupt

1997

Journal of Applied Physics

View full text Add to dashboard Cite

Fabry-Perot laser interferometry is used to obtain nanosecond time resolved particle velocity histories of the free surfaces of copper, tantalum, or magnesium disks driven by detonating triaminotrinitrobenzene ͑TATB͒-based charges and of the interfaces between detonating TATB and transparent salt crystals. Detonation reaction zone profiles are measured for self-sustaining detonation waves propagating through various thicknesses of LX-17 ͑92.5% TATB and 7.5% KelF binder͒ and pure ultrafine particle size TATB. The experimental records are compared to particle velocity histories calculated with the DYNA2D hydrodynamic code using the ignition and growth reactive flow model. The calculations yield excellent agreement with the experimental records for LX-17 using an unreacted von Neumann spike pressure of 33.7 GPa, a reaction rate law which releases 70% of the chemical energy within 100 ns, and the remaining 30% over 300 additional ns, and a reaction product equation of state fit to cylinder test and supracompression data with a Chapman-Jouguet ͑C-J͒ pressure of 25 GPa. The late time energy release is attributed to diffusion controlled solid carbon particle formation. Ultrafine TATB, pressed to a lower density (1.80 g/cm 3 ) than LX-17 (1.905 g/cm 3 ), exhibits lower unreacted spike and C-J pressures than LX-17 but similar reaction rates.

show abstract

Section: Introductionmentioning

confidence: 99%

Detonation waves in triaminotrinitrobenzene

Tarver

Kury

Breithaupt

1997

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…The traditional diagnostic is the Velocity Interferometer System for Any Reflector (VISAR), which is a commercially available product [2]. Fabry-Perot-based systems are also used, but are less common [3]. This paper describes a third interferometer system to make these velocity measurements that is based upon the heterodyne principle of generating a beat frequency proportional to the velocity.…”

Section: Introductionmentioning

confidence: 99%

Using the Heterodyne Method to Measure Velocities on Shock Physics Experiments

Strand¹,

Whitworth²

2008

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. We developed a velocimeter system several years ago that uses the heterodyne method [1]. This system is assembled from commercially available components that were developed for the telecommunications industry. There are several advantages of this system over the traditional VISAR method that has made it increasingly popular. This system is compact, portable, and relatively inexpensive. The maximum velocity of this system is determined by the electrical bandwidth of the electronics and the digitizer sample rate. The maximum velocity for the system described here is over 5 km/s.

show abstract

“…Ref. 1 and references within it cover developments up to 1991, when we had only one or two beam vekcimetry facilties. We describe our new 10 beam facility, which has recorded to date over 150 veiocit y-time histories.…”

Section: Introductionmentioning

confidence: 99%

<title>Many-beam velocimeter for fast surfaces</title>

et al. 1997

Self Cite

View full text Add to dashboard Cite

For the past 5 years, we have conceived, built and successfully used a new 10 beam laser velocimeter for monitoring velocity vs time histories of fast moving surfaces, and will have a 20 beam capability soon. We conceived a method to multiplex 5 to 10 beams through a single Fabry-Perot interferometer, without losing any light that our equivalently-performing single beam system could use, and with negligible crmstaik. This saves the cost of 16 interferometers, simplifies operation and takes less space than without multiplexing. We devised special efficient light collecting probes, streak cameras that change sweep speed during (he course of Ihe record, and a new doubie cavity interferometer which is better, cheaper anti more flexible than our previous versions. With the 10 recorders, we conceived and employ a method of using both a fast and a slow streak camera on each of 5 beams without reducing the light that is available to either camera separately. Five new galvanometrically -driven triggerable CCD streak carnetas will be installed soon.

show abstract

Formulas for Fabry–Perot velocimeter performance using both stripe and multifrequency techniques

Cited by 17 publications

References 7 publications

Detonation waves in triaminotrinitrobenzene

Detonation waves in triaminotrinitrobenzene

Using the Heterodyne Method to Measure Velocities on Shock Physics Experiments

<title>Many-beam velocimeter for fast surfaces</title>

Contact Info

Product

Resources

About