A fast time-response bolometer for soft X-ray radiation energy measurements in a high-current Z-pinch

Abstract Effect of the pulsed soft X-ray fluxes (PSXF) on the surface topography of metals (Mg and Cu) has been investigated. Soft pulse X-ray irradiation (energy quanta of 0.1-1.0 keV) were carried out on a high-current MIG generator. The sample of magnesium was located at a distance of 10 cm from the X-ray source. Since the distance to the sample significantly exceeded the size of the X-ray beam, it can be assumed that the density of the X-ray radiation flow to the magnesium sample was uniform. The duration of the radiation pulse was 100 ns, and the radiation energy density in the pulse varied from 13 to 19 J/cm2. As a result of melting under the action of PSXF of the near-surface layer of metals and subsequent solidification, a wavy relief is formed on their surface. Defects in the form of craters, which usually occur after the impact of a powerful pulsed ion flow on metals, were not detected.

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Soft X-ray Spectra Analysis in a High-Current Z-Pinch

10.1063/1.2949205 ◽

1994 ◽

Cited By ~ 2

Author(s):

F. B. Rosmej ◽

O. N. Rosmej ◽

S. A. Komarov ◽

V. O. Mishensky ◽

J. G. Utjugov ◽

...

Keyword(s):

High Current ◽

Spectra Analysis ◽

X Ray ◽

Z Pinch

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On prospects of powerful SXR pulse generation on “Gamma 4” facility

International Journal of Modern Physics Conference Series ◽

10.1142/s2010194514603354 ◽

2014 ◽

Vol 32 ◽

pp. 1460335 ◽

Cited By ~ 2

Author(s):

V. S. Gordeev ◽

A. V. Grishin ◽

A. P. Orlov ◽

A. L. Mozgovoy ◽

B. G. Repin ◽

...

Keyword(s):

Electron Accelerator ◽

Boundary Energy ◽

Output Pulse ◽

Pulse Generation ◽

High Current ◽

Radiation Physics ◽

X Ray ◽

Radiation Output ◽

Z Pinch ◽

Diode Current

RFNC-VNIIEF is creating a multi-module multi-terawatt electro-physical facility “Gamma”, intended for research in the field of radiation physics. Up to now RFNC-VNIIEF created the first module of the facility – a high-current pulsed electron accelerator “Gamma-1”, having the following parameters: boundary energy of the electrons of ≤ 2.0 MeV, diode current of 0.75 MA, maximum electric power of 1.5 TW. Creation of the 4-module variant of the facility (Gamma-4) is the next stage of the work. This paper presents calculation research of expected characteristics of soft x-ray radiation output pulse at “Gamma-4” facility operation into a common load (Z-pinch).

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Lead-halide Cs4PbBr6 single crystals for high-sensitivity radiation detection

NPG Asia Materials ◽

10.1038/s41427-021-00308-w ◽

2021 ◽

Vol 13 (1) ◽

Author(s):

Yang Li ◽

Wenyi Shao ◽

Liang Chen ◽

Juan Wang ◽

Jing Nie ◽

...

Keyword(s):

Single Crystals ◽

Alpha Particle ◽

Radiation Detection ◽

High Sensitivity ◽

Time Response ◽

Fast Time ◽

X Rays ◽

X Ray ◽

X Ray Imaging ◽

Lead Halide

AbstractLow-dimensional perovskite materials and their derivatives with excellent optical performance are promising candidates for light-emission applications. Herein, centimeter lead-halide Cs4PbBr6 single crystals (SCs), which have been used for radiation detection with the indirect conversion method, were synthesized by a facile solution process. The Cs4PbBr6 scintillator exhibits bright green emission peaking at 525 nm and a high photoluminescence quantum yield (up to 86.7%) under 375 nm laser excitation. The Cs4PbBr6 SCs exhibit high sensitivity to 40 keV X-rays, with a favorable linearity with the X-ray exposure dose rate, and the detection limit is as low as 64.4 nGyair/s. The scintillation time-response performance of the Cs4PbBr6 SCs was acquired by a time-correlated single-photon counting system under alpha-particle excitation. The Cs4PbBr6 SCs exhibit a very fast time response (τav = 1.46 ns) to alpha particles from a 241Am radiation source. This value is comparable to that of the commercial plastic scintillator EJ-228 (τav = 1.31 ns) and much faster than that of the LYSO(Ce) scintillator (τav = 36.17 ns). Conceptual X-ray imaging and alpha-particle pulse height spectroscopy experiments were also performed. These results demonstrated the potential of Cs4PbBr6 SCs for radiation detection applications, including X-ray imaging and charged particle detection with fast scintillation decay time and high sensitivity.

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Spatial resolution of X-ray microanalysis in thin foils

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100109860 ◽

1978 ◽

Vol 36 (1) ◽

pp. 544-545

Author(s):

R. Hutchings ◽

I.P. Jones ◽

M.H. Loretto ◽

R.E. Smallman

Keyword(s):

Spatial Resolution ◽

Electron Probe ◽

Beam Divergence ◽

Inelastic Interaction ◽

Specimen Thickness ◽

High Current ◽

Beam Spreading ◽

X Ray ◽

Thin Foils ◽

Complex Calculation

There is increasing interest in X-ray microanalysis of thin specimens and the present paper attempts to define some of the factors which govern the spatial resolution of this type of microanalysis. One of these factors is the spreading of the electron probe as it is transmitted through the specimen. There will always be some beam-spreading with small electron probes, because of the inevitable beam divergence associated with small, high current probes; a lower limit to the spatial resolution is thus 2αst where 2αs is the beam divergence and t the specimen thickness.In addition there will of course be beam spreading caused by elastic and inelastic interaction between the electron beam and the specimen. The angle through which electrons are scattered by the various scattering processes can vary from zero to 180° and it is clearly a very complex calculation to determine the effective size of the beam as it propagates through the specimen.

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Influence of High Current Pulsed Electron Beam Irradiation on Ni-P Electroless Plating

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.299-300.77 ◽

2011 ◽

Vol 299-300 ◽

pp. 77-81

Author(s):

Yang Xu ◽

Sheng Zhi Hao ◽

Xiang Dong Zhang ◽

Min Cai Li ◽

Chuang Dong

Keyword(s):

Electroless Plating ◽

Electron Beam Irradiation ◽

Xrd Analysis ◽

High Current ◽

X Ray Diffraction ◽

X Ray ◽

Pulsed Electron Beam ◽

6063 Aluminum Alloy ◽

Pre Treatment ◽

Better Than

The surface irradiation of 6063 aluminum alloy by high current pulsed electron was conducted with the aim of replacing the complicated pre-treatment in the processes of electroless plating. To explore the microstructure changes, optical metallography, SEM (scanning electron microscope), XRD (X-ray diffraction) analyses were carried out, and the sliding tests were used for the detection of wear resistance. It was concluded that the HCPEB irradiation could replace the pre-treatment of aluminum substrate as required in conventional electroless plating with a decreased surface roughness of Ni-P alloy plating layer. The plates exhibited an amorphous microstructure as demonstrated by XRD analysis. The plates, produced with the routine of HCPEB irradiation, activation and electroless plating possess, also exhibited good quality, even better than that of conventional electroless plating technique.

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