Neutron generators developed at LBNL for homeland security and imaging applications

Reijonen, J.

doi:10.1016/j.nimb.2007.04.192

Cited by 44 publications

(12 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, extrapolation from our -3 -experimental results for beam-loaded D-D generators gives about half that value, likely due to an incomplete beam-loading of the titanium layer [10]. Therefore, the neutron yield for a 100 keV, 100 mA T + /D + beam is estimated as ~1·10 12 n/s for a Ti-target and ~5·10 11 n/s for a Mo-target.…”

Section: Neutron Generator Conceptmentioning

confidence: 74%

High-yield D–T neutron generator

Ludewigt¹,

Wells²,

Reijonen³

2007

Nuclear Instruments and Methods in Physics Research Section B:

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Neutron Generator Conceptmentioning

confidence: 74%

High-yield D–T neutron generator

Ludewigt¹,

Wells²,

Reijonen³

2007

Nuclear Instruments and Methods in Physics Research Section B:

Self Cite

View full text Add to dashboard Cite

show abstract

“…Three devices are discussed in this presentation: two neutron generators, one for neutron imaging applications and one for Pulsed Fast Neutron Transmission Spectroscopy (PFNTS) based cargo interrogation system and a gamma generator for active interrogation of nuclear materials based on photofission and photoneutron detection. Some of these sources have been highlighted in previous conferences 1,2,3 . The specifications of these sources are given in the following chapters, highlighting the applications, the performance and experimental data for each of these three sources.…”

Section: Introductionmentioning

confidence: 91%

“…The Plasma and Ion Source Technology Group at LBNL has been developing a T-T fusion based, wide energy spectrum neutron generator for this application 1,2 . T-T fusion neutrons generate neutron energies from 0 MeV to 9 MeV.…”

Section: Specifications Of Pulsed White Neutron Generatormentioning

confidence: 99%

Development of advanced neutron/gamma generators for imaging and active interrogation applications

et al. 2007

Self Cite

View full text Add to dashboard Cite

We report here on the development of neutron and photon sources for use in imaging and active interrogation applications, where there is a growing urgency for more advanced interrogation tools. These devices include high yield D-D, D-T and T-T fusion reaction based neutron generators and also low energy nuclear reaction based high-energy gamma generators. One common feature in these various devices is the use of a high-efficiency, RF-induction discharge ion source. This discharge method provides high plasma density for high output current, high atomic species from molecular gases for high efficiency neutron or gamma generation and long lifetime. Predictable discharge characteristics of these plasma generators allow accurate modeling for both the beam dynamics and for the heat loads at the target spot. Current status of the neutron and gamma generator development with experimental data will be presented.

show abstract

“…Neutron generators that utilize rf-driven plasma ion sources have been developed at the Lawrence Berkeley National Laboratory (LBNL) [1][2][3][4][5][6]. These neutron generators are useful in the interrogation of cargo or luggage containers, which may contain explosives, contraband, or special nuclear materials.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of a RF-Driven Ion Source for a Neutron Generator Used for Associated Particle Imaging

Wu¹,

Hurley²,

Ji³

et al. 2009

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. We present recent work on a prototype compact neutron generator for associated particle imaging (API). API uses alpha particles that are produced simultaneously with neutrons in the deuterium-tritium ( 2 D( 3 T,n) 4 α) fusion reaction to determine the direction of the neutrons upon exiting the reaction. This method determines the spatial position of each neutron interaction and requires the neutrons to be generated from a small spot in order to achieve high spatial resolution. The ion source for API is designed to produce a focused ion beam with a beam spot diameter of 1-mm or less on the target. We use an axial type neutron generator with a predicted neutron yield of 10 8 n/s for a 50 μA D/T ion beam current accelerated to 80 kV. The generator utilizes a RF planar spiral antenna at 13.56 MHz to create a highly efficient inductively-coupled plasma at the ion source. Experimental results show that beams with an atomic ion fraction of over 80% can be obtained while utilizing only 100 watts of RF power in the ion source. A single acceleration gap with a secondary electron suppression electrode is used in the tube. Experimental results, such as the current density, atomic ion fraction, electron temperature, and electron density, from ion source testing will be discussed.

show abstract

Neutron generators developed at LBNL for homeland security and imaging applications

Cited by 44 publications

References 4 publications

High-yield D–T neutron generator

High-yield D–T neutron generator

Development of advanced neutron/gamma generators for imaging and active interrogation applications

Characteristics of a RF-Driven Ion Source for a Neutron Generator Used for Associated Particle Imaging

Contact Info

Product

Resources

About