一种便于现场部署的紧凑型中子散射相机。

A compact neutron scatter camera for field deployment.

作者信息

Goldsmith John E M, Gerling Mark D, Brennan James S

机构信息

Sandia National Laboratories, P.O. Box 969, MS 9406, Livermore, California 94551, USA.

出版信息

Rev Sci Instrum. 2016 Aug;87(8):083307. doi: 10.1063/1.4961111.

DOI:10.1063/1.4961111

PMID:27587113

Abstract

We describe a very compact (0.9 m high, 0.4 m diameter, 40 kg) battery operable neutron scatter camera designed for field deployment. Unlike most other systems, the configuration of the sixteen liquid-scintillator detection cells are arranged to provide omnidirectional (4π) imaging with sensitivity comparable to a conventional two-plane system. Although designed primarily to operate as a neutron scatter camera for localizing energetic neutron sources, it also functions as a Compton camera for localizing gamma sources. In addition to describing the radionuclide source localization capabilities of this system, we demonstrate how it provides neutron spectra that can distinguish plutonium metal from plutonium oxide sources, in addition to the easier task of distinguishing AmBe from fission sources.

摘要

我们描述了一种专为现场部署而设计的非常紧凑（高0.9米、直径0.4米、重40千克）且可由电池供电的中子散射相机。与大多数其他系统不同，十六个液体闪烁体探测单元的配置旨在提供全向（4π）成像，其灵敏度与传统的双平面系统相当。尽管该相机主要设计用作定位高能中子源的中子散射相机，但它也可作为定位伽马源的康普顿相机。除了描述该系统的放射性核素源定位能力外，我们还展示了它如何提供能区分金属钚与氧化钚源的中子能谱，以及比区分镅铍源与裂变源这项更简单的任务。