We present spectroscopic measurements in which utilized are line-intensity ratios in the near-uv to measure electron energies of several hundred eVs, which usually necessitates the use of emission in the soft x-ray region. The main intensity ratio selected is of the BIII transition 1s(2)2s2S(1/2)-1s(2)2p2P3/2 (2066A) and the BIV transition 1s2s3S(1)-1s2p3P2 (2822A). A detailed atomic-kinetics modeling is made to demonstrate the usefulness of this atomic system for studying transient, ionizing plasmas. Here, it is applied for the characterization of high-electron energies (approximately 500 eV) generated due to the rapid penetration of a magnetic field pulse into a low-collisionality plasma. Limitations of the use of the method are discussed.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevE.78.036410 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Investigation Myocardial Perfusion Scan Parameters and Walls Motion in Patients undergoing Cardiac Surgery.
J Biomed Phys Eng
December 2024
Department of Medical Physics and Engineering, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
Background: Coronary heart disease the most prevalent form of cardiovascular disease, results from the blockage of blood flow through arteries. The Myocardial Perfusion Scan (MPS) is considered a non-invasive method to assess the heart condition and provides valuable information, such as End Diastolic Volume (EDV), End Systolic Volume (ESV), Ejection Fraction (EF), Lung to Heart Ratio (LHR), and Transient Ischemic Dilatation (TID).
Objective: This study aimed to investigate changes in gated heart scan parameters to diagnose patients, who are candidates for heart surgery.
Lung Ultrasound in Neonates: A Narrative Review Along With Diagnostic Insights and Early Postnatal Applications.
Cureus
September 2024
Pediatrics, Ospedale Microcitemico, Cagliari, ITA.
Article Synopsis
- Ultrasound (US) is becoming a key non-invasive imaging tool for diagnosing lung diseases in newborns, offering high-quality images without harmful radiation.
- The study discusses how thoracic ultrasound helps assess lung conditions, including analyzing pleural structures and checking for issues like pneumothorax and respiratory distress syndrome through specific ultrasound findings.
- It highlights the growing role of lung ultrasound in neonatal care by improving diagnostics, predicting intensive care needs, and reducing the need for X-rays, enhancing overall patient management from birth.
Real-Time Observation of Frustrated Ultrafast Recovery from Ionization in Nanostructured SiO_{2} Using Laser-Driven Accelerators.
Phys Rev Lett
September 2024
Centre for Light-Matter Interactions, Department of Physics and Astronomy, Queen's University Belfast, Belfast BT7 1NN, United Kingdom.
Article Synopsis
- Ionizing radiation can lead to significant damage in materials, but understanding this process, especially in nanostructures, has been challenging due to methodological limitations.
- This study utilized transient photoabsorption to examine the behavior of free electrons in bulk and nanostructured silica (aerogel) subjected to brief bursts of radiation from x rays and protons.
- Results indicate a notable increase in the lifetime of free electrons in aerogels, linked to a disruption in typical recovery processes, providing insights into how small-scale interactions can lead to observable effects in larger systems.
The oxygen puzzle in FLASH radiotherapy: A comprehensive review and experimental outlook.
Clin Transl Radiat Oncol
November 2024
Laboratory for Analysis by Nuclear Reaction (LARN), Namur Research Institute for Life Sciences (NARILIS), University of Namur, Rue de Bruxelles 61, B-5000 Namur, Belgium.
Article Synopsis
- - FLASH radiotherapy offers effective tumor control with reduced damage to surrounding healthy tissues by delivering radiation at ultra-high dose rates (≥40 Gy/s), known as the FLASH effect.
- - Current explanations for the FLASH effect highlight the role of oxygen, including transient hypoxia and reactive oxygen species (ROS), but no single hypothesis fully accounts for the differences in tissue responses.
- - The review compiles existing theories and proposes new mechanisms for the FLASH effect, along with experiments aimed at enhancing understanding of ROS's behavior and their biological impacts post-irradiation.
Analysis of coupling effect between TID and SET in SOI Tri-Gate nanowire field-effect transistors.
Nanotechnology
October 2024
Science and Technology on Reliability Physics and Application Technology of Electronic Component Laboratory, China Electronic Product Reliability and Environmental Testing Research Institute, Guangzhou 511370, People's Republic of China.
This study investigates the response of nanowire field-effect transistors (NWFETs) to total ionizing dose (TID), single-event transient (SET), and their coupling effects in junctionless (JL), inversion (IM), and junctionless accumulation (AC) modes. The degradation of the three modes under irradiation and the effect of device bias configuration on the electrical properties of NWFETs are analyzed, and the different effects of SET on the three modes are compared. On this basis, the influence of TID on SET current generation and the charge collection mechanism are studied, and the changes in peak current, pulse width, and collected charge of transient current under different TIDs are compared.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!