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Quantum Beam Science, Volume 8, Issue 4

December 2024 - 8 articles

Cover Story: The development of advanced volume detectors for neutron time-of-flight diffractometers offers exciting new possibilities. This work takes advantage of these advances by implementing a novel data preprocessing algorithm, used for the first time with data acquired during the operation of a singular mounting unit of the POWTEX detector, which is placed at the POWGEN instrument (SNS, ORNL, Oak Ridge, TN, USA). Three perspectives are shown: 3D view, top view, and side view. Cartesian coordinates are also included, as are the unique POWTEX detector coordinates (S, a, e, N). The side view (N/e vs. a) shows two trajectories and how they translate into a depth–intensity expectation (I vs. a). The black line is a trajectory from the sample, and the red is a trajectory for a secondary scatterer, e.g., a sample environment, with a different origin. View this paper
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Articles (8)

  • Article
  • Open Access
3 Citations
1,644 Views
20 Pages

Microstructural Analysis, Compressive Strength, and Wear Properties of Spark-Plasma-Sintered Al–Mg–PPA Composites

  • Osarue Osaruene Edosa,
  • Francis Kunzi Tekweme,
  • Peter A. Olubambi and
  • Kapil Gupta

One technique for sintering green compacts and imparting the required qualities to meet the specific application requirements is spark plasma sintering (SPS). This study examines the effects of SPS parameters (sintering temperature and pressure, hold...

  • Article
  • Open Access
1,409 Views
18 Pages

Exploration of Physical–Chemical and Structural-Phase Mechanisms in Ti-Al Intermetallic Coating Formation

  • Almaz Nazarov,
  • Rustem Nagimov,
  • Alexey Oleinik,
  • Alexey Maslov,
  • Alexey Nikolaev,
  • Kamil Ramazanov,
  • Vladimir Denisov,
  • Yuri Ivanov and
  • Elena Korznikova

This study examines coatings based on Ti-Al system intermetallics deposited in a nitrogen environment. The research investigates the structure, phase composition, chemical composition, and mechanical properties of coatings with varying ratios of Ti-A...

  • Article
  • Open Access
1,440 Views
14 Pages

Multievent Correlation with Neutron Volume Detectors

  • Noah Nachtigall,
  • Andreas Houben and
  • Richard Dronskowski

The development of advanced volume detectors for neutron time-of-flight diffractometers offers exciting new possibilities. This work takes advantage of these advances by implementing a novel data preprocessing algorithm, exemplified for the first tim...

  • Article
  • Open Access
1,638 Views
13 Pages

Metallic Ca Aggregates Formed Along Ion Tracks and Optical Anisotropy in CaF2 Crystals Irradiated with Swift Heavy Ions

  • Hiroshi Amekura,
  • Norito Ishikawa,
  • Nariaki Okubo,
  • Feng Chen,
  • Kazumasa Narumi,
  • Atsuya Chiba,
  • Yoshimi Hirano,
  • Keisuke Yamada,
  • Shunya Yamamoto and
  • Yuichi Saitoh

It is known that swift heavy ion (SHI) irradiation induces the shape elongation of metal nanoparticles (NPs) embedded in transparent insulators, which results in anisotropic optical absorption. Here, we report another type of the optical anisotropy i...

  • Technical Note
  • Open Access
1 Citations
3,329 Views
16 Pages

Gunshot residues deposited on all surfaces in the nearest vicinity of the shooting incident, when revealed, can contribute to the explanation of various aspects of such an incident for forensic purposes. Examinations of gunshot residue, mainly inorga...

  • Article
  • Open Access
1,655 Views
17 Pages

Optical Energy Increasing in a Synchronized Motif-Ring Array of Autonomous Erbium-Doped Fiber Lasers

  • José Octavio Esqueda de la Torre,
  • Juan Hugo García-López,
  • Rider Jaimes-Reátegui,
  • José Luis Echenausía-Monroy,
  • Eric Emiliano López-Muñoz,
  • Héctor Eduardo Gilardi-Velázquez and
  • Guillermo Huerta-Cuellar

This work investigates the enhancement of optical energy in the synchronized dynamics of three erbium-doped fiber lasers (EDFLs) that are diffusively coupled in a unidirectional ring configuration without the need for external pump modulation. Before...

  • Article
  • Open Access
2 Citations
3,161 Views
14 Pages

Development of a Macro X-ray Fluorescence (MA-XRF) Scanner System for In Situ Analysis of Paintings That Operates in a Static or Dynamic Method

  • Renato P. de Freitas,
  • Miguel A. de Oliveira,
  • Matheus B. de Oliveira,
  • André R. Pimenta,
  • Valter de S. Felix,
  • Marcelo O. Pereira,
  • Elicardo A. S. Gonçalves,
  • João V. L. Grechi,
  • Fabricio L. e. Silva and
  • Cristiano de S. Carvalho
  • + 5 authors

This work presents the development of a macro X-ray fluorescence (MA-XRF) scanner system for in situ analysis of paintings. The instrument was developed to operate using continuous acquisitions, where the module with the X-ray tube and detector moves...

  • Communication
  • Open Access
1 Citations
1,602 Views
7 Pages

Stable and Tunable Erbium Ring Laser by Rayleigh Backscattering Feedback and Saturable Absorber for Single-Mode Operation

  • Chien-Yu Liao,
  • Yu-Hsin Kao,
  • Ying-Zhen Chen,
  • Kuan-Ming Cheng,
  • Chun-Yen Lin,
  • Tsu-Hsin Wu,
  • Teng-Yao Yang and
  • Chien-Hung Yeh

This work demonstrates a high-quality erbium-doped fiber (EDF) ring laser in the L-band gain range by combining the Rayleigh backscattering (RB) feedback signal and unpumped EDF induced saturable absorber (SA) filter. The optical filter effect induce...

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Quantum Beam Sci. - ISSN 2412-382X