A concentration detector includes: a neutron source emitting neutrons to a target; a gamma ray detector detecting and determining an amount of specific gamma rays that are among gamma rays generated in the target by interactions with the neutrons; and a concentration calculator calculating a concentration of the target at selected depths in the inspection target, based on the detected amount. A relational expression expressing a relation between a plurality of concentrations of the target in a plurality of virtual layers and a detected amount of the specific gamma rays is predetermined for each type of the specific gamma rays or each detection condition. The concentration calculator applies the detected amount for each gamma ray type or each detection condition, to the relational expression for the type or the detection condition, and calculates a concentration of the target component in the layer at each depth or the specific depth.

This disclosure presents systems and processes to collect elemental composition of target fluid and solid material located downhole of a borehole. Waveguides can be utilized that include capillary optics to deliver emitted high energy into a container or a conduit and then to detect the high energy. A source waveguide can be used to emit the high energy into the target fluid and a detector waveguide can collect resulting measurements. Each waveguide can include a protective sheath and a pressure cap on the end of the capillary optics that are proximate the target fluid, to protect against abrasion and target fluid pressure. In other aspects, a pulsed neutron tool can be utilized in place of the waveguides to collect measurements. The collected measurements can be utilized to generate chemical signature results that can be utilized to determine the elemental composition of the target fluid or of the solid material.

The presence of chlorine and nitrogen are determined and measured using a non-invasive portable neutron-generating and gamma ray detecting system(s). Portable devices of the present invention can also be used to detect chlorine and/or nitrogen-containing underground objects rapidly and on-site. Devices and systems described herein can be operated remotely and pre-programmed with search patterns, guided by an operator remotely, or programmed to home in on high-chlorine and/or nitrogen concentration areas.

The present invention is a device and method for the non-invasive detection of hazardous materials in an aquatic environment, wherein the device comprises a sealed housing, in which there is a fast neutron generator (101) surrounded by α particle detectors (106), and gamma quantum detector (111), wherein the fast neutron generator (101) emits neutrons in the direction of the tested object (107) through the neutron and/or gamma quanta guide (108), and the gamma quanta detector records gamma quanta emitted by the nuclei of the tested object (107) transmitted through neutron and/or gamma quanta guide (110).

The present invention is a device and method for the non-invasive detection of hazardous materials in an aquatic environment, wherein the device comprises a sealed housing, in which there is a fast neutron generator (101) surrounded by α particle detectors (106), and gamma quantum detector (111), wherein the fast neutron generator (101) emits neutrons in the direction of the tested object (107) through the neutron and/or gamma quanta guide (108), and the gamma quanta detector records gamma quanta emitted by the nuclei of the tested object (107) transmitted through neutron and/or gamma quanta guide (110).

A system for analyzing soil content of a field includes a data acquisition unit configured to detect gamma spectra of each of a plurality of soil samples, wherein a surface area of the field is divided into a plurality of portions and the plurality of soil samples comprises at least one soil sample from each of the plurality of portions, a navigation unit configured to detect geographic coordinates of each of the plurality of soil samples, a data analysis unit configured to associate the detected gamma spectra of each of the plurality of soil samples with the geographic coordinates of the soil sample and determine a weight percent of at least one element within each of the soil samples based on the detected gamma spectra, and an element content map unit configured to generate a map indicating concentration of the at least one element within the soil of the field.

A system for analyzing soil content of a field includes a data acquisition unit configured to detect gamma spectra of each of a plurality of soil samples, wherein a surface area of the field is divided into a plurality of portions and the plurality of soil samples comprises at least one soil sample from each of the plurality of portions, a navigation unit configured to detect geographic coordinates of each of the plurality of soil samples, a data analysis unit configured to associate the detected gamma spectra of each of the plurality of soil samples with the geographic coordinates of the soil sample and determine a weight percent of at least one element within each of the soil samples based on the detected gamma spectra, and an element content map unit configured to generate a map indicating concentration of the at least one element within the soil of the field.

The present invention relates a security screening device, comprising: a radiation generator for respectively generating X-rays and neutron beams and irradiating same toward an inspection object; an inspection object transfer unit for changing the position of the inspection object; a radiation detector configured to respectively detect X-rays and neutron beams transmitted through the inspection object; and a gamma ray detector installed adjacent to the inspection object and configured to detect a gamma signal generated from the inspection object, wherein the radiation detector acquires image information of the inspection object by using radiation information detected from the X-rays and neutron beams that have passed through the inspection object, and the gamma ray detector analyzes the detected gamma ray to detect the location of the inspection object from the analysis of the inspection object and the image information.

The present invention relates a security screening device, comprising: a radiation generator for respectively generating X-rays and neutron beams and irradiating same toward an inspection object; an inspection object transfer unit for changing the position of the inspection object; a radiation detector configured to respectively detect X-rays and neutron beams transmitted through the inspection object; and a gamma ray detector installed adjacent to the inspection object and configured to detect a gamma signal generated from the inspection object, wherein the radiation detector acquires image information of the inspection object by using radiation information detected from the X-rays and neutron beams that have passed through the inspection object, and the gamma ray detector analyzes the detected gamma ray to detect the location of the inspection object from the analysis of the inspection object and the image information.

A detection system and method for investigating a content of an item to be inspected, comprising an inspection space for receiving said item and a neutron generator for generating a directional beam of energetic neutrons, directed towards said inspection space. A detector is responsive to interaction products coming from said inspection space and impinging substantially along a detection axis upon interaction of said energetic particles with nuclei of material of said item. Said neutron generator is configured to expose said inspection space to a uni-directional beam of energetic neutrons along an interrogation axis through said inspection space. Said directional beam has a smaller cross section than a corresponding cross section of said inspection space and smaller than a corresponding cross section of said item to be inspected. Said detector detects said interaction products along a detection axis upon interaction of said uni-directional beam of energetic neutrons with said item to be inspected.