Tensioned metastable fluids and nanoscale interactions with external stimuli—Theoretical-cum-experimental assessments and nuclear engineering applications

Taleyarkhan, R.P.; Lapinskas, J.; Xu, Yixi

doi:10.1016/j.nucengdes.2007.10.019

Cited by 42 publications

(16 citation statements)

References 9 publications

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“…During when the D-ATMFD fluid is under tension (below vacuum pressure), the state is metastable whereupon, neutron elastic scattering interactions may be monitored by the formation of transient bubbles [15] [14]. Piezoelectric elements that are attached to the outside of the D-ATMFD are used to monitor for shock signals generated by the imploding cavitation bubbles which occurs immediately following a neutron induced detection event.…”

Section: The D-atmfd Sensor System -Overviewmentioning

confidence: 99%

“…Previous work has shown via COMSOL multi-physics based assessments and direct experimental measurements of the distribution density of neutron-induced bubble nucleation sites that the size of the sensitive volume (and consequently the radius) is directly related to the input power of the D-ATMFD resonant chamber. For example, a relatively small (~40%) rise in the input power from 4 W to 5.5 W resulted in significant increase of the sensitive volume (by ~75% ), i.e., from ~20 cm 3 to ~35 cm 3 [14] [15]. This is based on the principle that the higher the negative pressure amplitude in the detection fluid is, the higher the probability that a neutron induced detection event will occur.…”

Section: Scaling Of D-atmfds For Optimization Of Directionality Informentioning

confidence: 99%

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Advancements in the development of a directional-position sensing fast neutron detector using acoustically tensioned metastable fluids

Archambault¹,

Webster

Grimes

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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Advancements in the development of a directional-position sensing fast neutron detector using Acoustically tensioned metastable Fluids, Nuclear Instruments and Methods in Physics Research A, http://dx.AbstractAdvancements in the development of a direction and position sensing fast neutron detector which utilizes the directional acoustic tensioned metastable fluid detector (D-ATMFD) are described. The resulting D-ATMFD sensor is capable of determining the direction of neutron radiation with a single compact detector versus use of arrays of detectors in conventional directional systems. Directional neutron detection and source positioning offer enhanced detection speeds in comparison to traditional proximity searching;including enabling determination of the neutron source shape, size, and strength in near real time. This paper discusses advancements that provide the accuracy and precision of ascertaining directionality and source localization information utilizing enhanced signal processing-cum-signal analysis, refined computational algorithms, and on-demand enlargement capability of the detector sensitive volume. These advancements were accomplished utilizing experimentation and theoretical modeling. Benchmarking and qualifications studies were successfully conducted with random and fission based special nuclear material (SNM) neutron sources ( 239 Pu-Be and 252 Cf). These results of assessments have indicated that the D-ATMFD compares well in technical performance with banks of competing directional fast neutron detector technologies under development worldwide, but it does so with: a single detector unit; an unlimited field of view; and at a significant reduction in both cost and size while remaining completely blind to common background (e.g., beta-gamma) radiation. Rapid and direct SNM neutron source imaging with two D-ATMFD sensors was experimentally demonstrated, and furthermore, validated via multidimensional nuclear particle transport simulations utilizing MCNP-PoliMi. Characterization of a scaled D-ATMFD based radiation portal monitor (RPM) as a cost-effective and efficient 3 He sensor replacement was performed utilizing MCNP-PoliMi simulations, the results of which are discussed and presented.

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Section: The D-atmfd Sensor System -Overviewmentioning

confidence: 99%

Section: Scaling Of D-atmfds For Optimization Of Directionality Informentioning

confidence: 99%

Advancements in the development of a directional-position sensing fast neutron detector using acoustically tensioned metastable fluids

Archambault¹,

Webster

Grimes

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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“…[1] Several of the challenges facing detection of fissionable materials will be addressed and the use of this technique for security applications is described. Active interrogation [2] is advantageous for detection of U (fissionable and fissile) based materials because there are many such materials that emit negligibly low radiation on their own and therefore can be effectively shielded.…”

Section: Introductionmentioning

confidence: 99%

“…However, scanning thick sections requires an intense quantity of particles from the particle generator which can often electronically saturate a detector during critical periods. Selective insensitivity [1] in a detector (to γ photon photons) is highly desirable to avoid dead time issues.…”

Section: Introductionmentioning

confidence: 99%

“…First it can be made selectively "blind" to γ photon radiation, which can readily overcome and saturate conventional (e.g., NE-213, 3 He, LiI, BF 3 ) scintillation based detectors. Secondly, a TMFD can be cycled on and off in a controlled fashion within microseconds [1] in order to detect secondary particles from interrogation while avoiding the probing particles altogether allowing measurement of small fluxes that normally would be masked by the interrogation particles.…”

Section: Introductionmentioning

confidence: 99%

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Tensioned Metastable Fluid Detectors for active interrogation of Special Nuclear Materials

Webster

Sansone

Archambault

et al. 2009

2009 IEEE Conference on Technologies for Homeland Security

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This paper describes the first step in developing a Tensioned Metastable Fluid Detector (TMFD) based method for active detection of Special Nuclear Materials (SNMs). One of the greatest difficulties in detection of SNMs by active interrogation is the task of distinguishing between the probing particles and the secondary particles that indicate the presence of SNMs. The TMFD's selective insensitivity and γ photon blindness features are advantageous for alleviating this problem. The working principle of the TMFD is discussed along with its applications for security. The experimental work to date involving detection of small quantities of uranium with conventional detectors is discussed along with results of fission neutron detection. Statistically significant detection was obtained within 5 minutes of counting to ascertain and measure conclusive evidence for the presence of a 25g sample of uranium containing < 0.1g of 235 U. Results of simulations of the TMFD experiments to come are presented, and the road map for developing the TMFDbased active interrogation detection system is laid out.

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Acoustic Inertial Confinement Nuclear Fusion

Taleyarkhan

Lahey

Нигматулин

2011

Nuclear Energy Encyclopedia

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Tensioned metastable fluids and nanoscale interactions with external stimuli—Theoretical-cum-experimental assessments and nuclear engineering applications

Cited by 42 publications

References 9 publications

Advancements in the development of a directional-position sensing fast neutron detector using acoustically tensioned metastable fluids

Advancements in the development of a directional-position sensing fast neutron detector using acoustically tensioned metastable fluids

Tensioned Metastable Fluid Detectors for active interrogation of Special Nuclear Materials

Acoustic Inertial Confinement Nuclear Fusion

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