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Quantum Beam Science, Volume 8, Issue 2

2024 June - 7 articles

Cover Story: A high signal-to-background ratio (SBR) is desirable for a neutron diffractometer to acquire high-quality diffraction patterns. In addition to excluding many backgrounds from the surrounding environment by using a coarse collimator, a 3D-printed fine radial collimator equipped at the front is found to remarkably boost the diffraction SBR for an area detector bank. A fine collimator that is directly printed using plastics shows excellent collimation effects with high SBR, with no need to exposure the body to neutron-absorbing elements like boron. This work investigated various collimation configurations in a large and complex instrument space using the engineering materials diffractometer VULCAN at the Spallation Neutron Source, Oak Ridge National Laboratory. View this paper
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Articles (7)

  • Article
  • Open Access
3 Citations
3,085 Views
20 Pages

High Energy Pulsed Laser Beam to Produce a Thin Layer of Crystalline Silver without Heating the Deposition Substrate and Its Catalytic Effects

  • Alexandru Cocean,
  • Georgiana Cocean,
  • Cristina Postolachi,
  • Silvia Garofalide,
  • Daniela Angelica Pricop,
  • Bogdanel Silvestru Munteanu,
  • Georgiana Bulai,
  • Nicanor Cimpoesu,
  • Iuliana Motrescu and
  • Silviu Gurlui
  • + 4 authors

Crystalline silver thin layers were obtained using high-energy pulsed laser ablation without the heating of the deposition substrate. The fluid Plateau–Rayleigh (PRI), Rayleigh–Taylor (RTI), and Richtmyer–Meshkov (RMI) instabilities...

  • Article
  • Open Access
4 Citations
1,730 Views
12 Pages

Avoided level crossing muon spin resonance (ALC-μSR) is used to characterize muoniated free radicals. These radicals are used as probes of the local environment and reorientational motion of specific components in complex systems. The parameter th...

  • Article
  • Open Access
3 Citations
2,118 Views
9 Pages

Effect of Collimation on Diffraction Signal-to-Background Ratios at a Neutron Diffractometer

  • Dunji Yu,
  • Yan Chen,
  • David Conner,
  • Kevin Berry,
  • Harley Skorpenske and
  • Ke An

High diffraction signal-to-background ratios (SBRs), the ratio of diffraction peak integrated intensity over its background intensity, are desirable for a neutron diffractometer to acquire good statistics for diffraction pattern measurements and subs...

  • Article
  • Open Access
4 Citations
3,395 Views
15 Pages

Simulation Dosimetry Studies for FLASH Radiation Therapy (RT) with Ultra-High Dose Rate (UHDR) Electron Beam

  • Nick Gazis,
  • Andrea Bignami,
  • Emmanouil Trachanas,
  • Melina Moniaki,
  • Evangelos Gazis,
  • Dimitrios Bandekas and
  • Nikolaos Vordos

FLASH-radiotherapy (RT) presents great potential as an alternative to conventional radiotherapy methods in cancer treatment. In this paper, we focus on simulation studies for a linear particle accelerator injector design using the ASTRA code, which p...

  • Article
  • Open Access
1 Citations
2,068 Views
17 Pages

Modification of Cu Oxide and Cu Nitride Films by Energetic Ion Impact

  • Noriaki Matsunami,
  • Masao Sataka,
  • Satoru Okayasu and
  • Bun Tsuchiya

We have investigated lattice disordering of cupper oxide (Cu2O) and copper nitride (Cu3N) films induced by high- and low-energy ion impact, knowing that the effects of electronic excitation and elastic collision play roles by these ions, respectively...

  • Article
  • Open Access
2 Citations
4,288 Views
19 Pages

Estimating lung volume capacity is crucial in clinical medicine, especially in disease diagnostics. However, the existing estimation methods are complex and expensive, which require experts to handle and consequently are more error-prone and time-con...

  • Review
  • Open Access
1 Citations
5,927 Views
33 Pages

The quest for high-performance lithium-ion batteries (LIBs) is at the forefront of energy storage research, necessitating a profound understanding of intricate processes like phase transformations and thermal runaway events. This review paper explore...

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Quantum Beam Sci. - ISSN 2412-382X