Publications by authors named "Buschmann B"

Article Synopsis
  • CR-39 proton radiography is a method used to image electric and magnetic fields in plasma at facilities like OMEGA and NIF, relying on a process called etching to prepare the CR-39 material.
  • The etch time significantly affects the background-to-signal ratio (BSR) and detection efficiency across different fluence levels, leading to errors in signal measurements as high as 15% if only one etch time is used.
  • Experiments at MIT determined how changing etch times impacts BSR and efficiency, showing that combining both short and long etch times improves the accuracy of field reconstructions by reducing mean squared error significantly.
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Article Synopsis
  • The paper examines how higher neutron fluences affect the detection efficiency of protons using CR-39, a common particle detection method, particularly in inertial fusion diagnostics.
  • Experiments revealed that as neutron fluence increases, the recovery of proton signals decreases, with added complications from longer etching times.
  • Notably, at 3 hours of etching, a 17% signal loss was observed with high neutron tracks, escalating to 67% at 6 hours, though improved signal isolation techniques can mitigate some of this loss.
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Image plates (IPs) are a quickly recoverable and reusable radiation detector often used to measure proton and x-ray fluence in laser-driven experiments. Recently, IPs have been used in a proton radiography detector stack on the OMEGA laser, a diagnostic historically implemented with CR-39, or radiochromic film. The IPs used in this and other diagnostics detect charged particles, neutrons, and x-rays indiscriminately.

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Image plates (IPs), or phosphor storage screens, are a technology employed frequently in inertial confinement fusion (ICF) and high energy density plasma (HEDP) diagnostics because of their sensitivity to many types of radiation, including, x rays, protons, alphas, beta particles, and neutrons. Prior studies characterizing IPs are predicated on the signal level remaining below the scanner saturation threshold. Since the scanning process removes some signal from the IP via photostimulated luminescence, repeatedly scanning an IP can bring the signal level below the scanner saturation threshold.

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Radiochromic film (RCF) and image plates (IPs) are both commonly used detectors in diagnostics fielded at inertial confinement fusion (ICF) and high-energy-density physics (HEDP) research facilities. Due to the intense x-ray background in all ICF/HEDP experiments, accurately calibrating the optical density of RCF as a function of x-ray dose, and the photostimulated luminescence per photon of IPs as a function of x-ray energy, is necessary for interpreting experimental results. Various measurements of the sensitivity curve of different IPs to x rays have been performed [Izumi et al.

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The renewable resource, wood, is becoming increasingly popular as a feedstock material for additive manufacturing (AM). It can help make those processes more affordable and reduce their environmental impact. Individual layer fabrication (ILF) is a novel AM process conceived for structural applications.

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Background: Falls are the leading cause of nonfatal unintentional injuries among hospitalized children with playground equipment accounting for more than 50%. National standards for playground rung and rail design exist, but there a lack of in vivo models available to test these standards. We developed a novel in vivo model to test rung and rail design.

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Background: The cytologic accuracy in assessing malignancy in papillary breast neoplasms (PBNs) is controversial. This is further complicated by overlapping features observed in other breast lesions that produce papillary-like tissue fragments.

Methods: The authors reviewed 22 fine-needle aspirates (FNAs) from histologically proven papillary neoplasms: papillary carcinoma (PCA; 10 aspirates) and intraductal papilloma (IDP; 12 aspirates).

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A prospective study extending over 4 months was carried out in which 142 shunt volume flow measurements were performed on 43 patients; two up to four operators with varying degrees of experience took part. Flow volumes varied between 51 and 2409 ml/min with an average blood flow volume of 521 ml/min. Comparison of measurements of individual operators showed errors of between 0.

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The association of Actinomyces with IUD wearers has been widely documented and the possibility of the recognition of actinomycetes-like organisms in routine Papanicolaou-stained cervicovaginal smears has been reported. We conducted a retrospective study of IUD wearers to determine the prevalence and significance of actinomycetes-like organisms found in such smears. Three hundred smears from current IUD wearers were rescreened for actinomycetes-like organisms.

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