Showing 221 - 240 results of 478 for search '"alpha particle"', query time: 0.13s Refine Results
  1. 221

    Relating a System’s Hamiltonian to Its Entropy Production Using a Complex Time Approach by Michael C. Parker, Chris Jeynes

    Published 2023-04-01
    “…In particular, the thermodynamics of two unitary entities are considered: the alpha particle, which is absolutely stable (that is, trivially reversible with zero entropy production), and a black hole whose unconditional irreversibility is characterized by a non-zero entropy production, for which we show an alternate derivation, confirming our previous one. …”
    Get full text
    Article
  2. 222

    Using intermediate energy knockout, pickup, and charge exchange reactions with invariant mass spectroscopy for investigating nuclear structure beyond the proton drip line by L. G. Sobotka, L. G. Sobotka, R. J. Charity

    Published 2025-01-01
    “…Unlike binary alpha decay, the part of the Chart of the Nuclides this mini review will focus on can undergo decay into many-particle final states and invariant-mass spectroscopy is the frame-invariant and multi-particle replacement for simple binary alpha-particle spectroscopy. Here we highlight how pairing is reflected in the zig-zaggy pattern of the drip line, the decay of nuclides beyond the drip lines, and what the masses of nuclides exterior to the p-drip line have taught us about shell structure. …”
    Get full text
    Article
  3. 223

    Radiative damping of toroidal Alfvén eigenmode in low-shear plasmas by B.N. Breizman, S.E. Sharapov

    Published 2025-03-01
    “…The threshold value of alpha-particle pressure for exciting AEs depends critically on the damping rate of AEs. …”
    Get full text
    Article
  4. 224

    The effect of geometrical parameters on the radon emanation coefficient and different radon parameters by Entesar H. El-Araby, A. Azazi

    Published 2023-11-01
    “…The emanation coefficient affects the values of the radiation dose of an alpha particle.…”
    Get full text
    Article
  5. 225

    Magnetic Helicity Associated with the Proton Temperature Anisotropy Instabilities in the Presence of an Imbalanced Solar Wind Turbulence by S. A. Markovskii, Bernard J. Vasquez

    Published 2023-01-01
    “…The symmetry of the unstable system is violated by alpha-particle streaming with respect to protons along the mean magnetic field. …”
    Get full text
    Article
  6. 226

    First time-resolved measurement of infrared scintillation light in gaseous xenon by Mona Piotter, Dominick Cichon, Robert Hammann, Florian Jörg, Luisa Hötzsch, Teresa Marrodán Undagoitia

    Published 2023-06-01
    “…Our setup consists of a gaseous xenon target irradiated by an alpha particle source and is instrumented with one IR- and two UV-sensitive photomultiplier tubes. …”
    Get full text
    Article
  7. 227
  8. 228

    Analysis of radiation shielding effectiveness of hydride and borohydride metals for nuclear industry by A.M. Osman

    Published 2023-03-01
    “…Secondly, the charged particle (electron, proton and alpha particle) interactions were examined by using ESTAR (Stopping Powers and Ranges for Electrons) and SRIM (The Stopping and Range of Ions in Matter) programs. …”
    Get full text
    Article
  9. 229

    Human epidermal growth factor receptor 2 expression in women with uterine cervix adenocarcinoma from Appalachian Kentucky by Charles A. Kunos, Denise Fabian, Dava W. Piecoro, Dana Napier, Rachel W. Miller, Frederick R. Ueland

    Published 2023-01-01
    “…IntroductionHigh-risk human epidermal growth factor receptor 2 (HER2)-positive adenocarcinomas associate with early recurrence and death, prompting consideration of novel radiotherapeutic options like a trastuzumab-linked thorium-227 alpha-particle emitting radionuclide.MethodsWe conducted a retrospective pilot biomarker study of uterine cervix cancers among patients in Appalachian Kentucky, to characterize an exploitable triage biomarker like HER2 expression before starting a prospective phase 0 trial.ResultsMost (60%) adenocarcinomas showed HER2 cell-surface overexpression, whereas squamous cell carcinomas (4%) did not do so.DiscussionFurther validation tests of HER2 expression as a triage biomarker for radiopharmaceutical selection are warranted.…”
    Get full text
    Article
  10. 230

    Determination of the Bulk Etch Rate of the Nuclear Track Detector LR-115 by Y. Kasim, S. Al-Nia’emi

    Published 2018-09-01
    “…The detector was irradiated with energies 1.8, 2.47, 3.29 and 3.95 MeV of alpha particles under normal incidence. A 1Ci241Am source emits alpha particles with the main energy of 5.485 MeV was used in irradiation of the detector. …”
    Get full text
    Article
  11. 231

    <sup>6</sup>LiF Converters for Neutron Detection: Production Procedures and Detector Tests by Antonio Massara, Simone Amaducci, Luigi Cosentino, Fabio Longhitano, Carmelo Marchetta, Gaetano Elio Poma, Martina Ursino, Paolo Finocchiaro

    Published 2022-12-01
    “…Several methods to detect thermal neutrons make use of the naturally occurring <sup>6</sup>Li isotope, as it has a rather high cross-section for neutron capture followed by a decay into an alpha particle and a triton. Due to the high chemical reactivity of lithium, the use of the stable isotopic salt <sup>6</sup>LiF is generally preferred to the pure <sup>6</sup>Li. …”
    Get full text
    Article
  12. 232

    Co-Doping Effects in CdWO4 Scintillator Thin Films as Alpha Counters: Ag and Gd Cases by Nooshin Heydarian Dehkordi, Morteza Raeisi, Sanaz Alamdari

    Published 2024-06-01
    “…The precision of the Monte Carlo technique for the computation of alpha particle trajectories in CWO-20wt. % PES and co-doped CWO-20wt. % PES thin films were 55 and 53 µm, respectively, which approximately agreed with FE-SEM images. …”
    Get full text
    Article
  13. 233

    Fast ion confinement in quasi-axisymmetric stellarator equilibria by P.J. Bonofiglo, D.W. Dudt, C.P.S. Swanson

    Published 2025-01-01
    “…Uniform marker deposition is used to probe the general confinement properties of the equilibria while a realistic beam-born population is provided from the BEAMS3D code and an alpha particle population is calculated from a fusion source integrator. …”
    Get full text
    Article
  14. 234

    Behaviour, use and safety aspects of astatine-211 solvated in chloroform after dry distillation recovery by Emma Aneheim, Ellinor Hansson, Chiara Timperanza, Holger Jensen, Sture Lindegren

    Published 2024-04-01
    “…Astatine-211 can be produced in medium energy cyclotrons by alpha particle bombardment of natural bismuth. The produced astatine is then commonly recovered from the irradiated solid target material through dry distillation. …”
    Get full text
    Article
  15. 235

    Does the Mott problem extend to Geiger counters? by Schonfeld Jonathan F.

    Published 2023-10-01
    “…The Mott problem is a simpler version of the quantum measurement problem that asks: Is there a microscopic physical mechanism – based (explicitly or implicitly) only on Schroedinger’s equation – that explains why a single alpha particle emitted in a single spherically symmetric s-wave nuclear decay produces a manifestly nonspherically symmetric single track in a cloud chamber? …”
    Get full text
    Article
  16. 236

    Proton and alpha radiation-induced mutational profiles in human cells by Tiffany M. Delhomme, Maia Munteanu, Manuela Buonanno, Veljko Grilj, Josep Biayna, Fran Supek

    Published 2023-06-01
    “…To this end, we exposed cultured cell lines from the human blood, breast and lung to fractionated proton and alpha particle (helium nuclei) beams at doses sufficient to considerably affect cell viability. …”
    Get full text
    Article
  17. 237

    AniMAIRE‐A New Openly Available Tool for Calculating Atmospheric Ionising Radiation Dose Rates and Single Event Effects During Anisotropic Conditions by C. S. W. Davis, F. Baird, F. Lei, K. Ryden, C. Dyer

    Published 2024-10-01
    “…AniMAIRE expands the physics of the MAIRE + model such that dose rate calculations can be performed for anisotropic solar energetic particle conditions by supplying a proton or alpha particle rigidity spectrum, a pitch angle distribution, and the conditions of Earth's magnetosphere. …”
    Get full text
    Article
  18. 238

    Probing Cluster Transfer in Peripheral Collisions of 40Ar on 64Ni at 15 MeV/nucleon by Giannitsa Chrysi, Souliotis Georgios, Depastas Theo, Koulouris Stergios, Gkatzogias Konstantinos, Veselsky Martin, Yennello Sherry, Bonasera Aldo

    Published 2024-01-01
    “…Motivated by the current activity on clustering, we focused our attention on the channel corresponding to the production of the 36S ejectile, which may have resulted from the removal of an alpha particle cluster from the 40Ar projectile. The experimental distributions were compared with two dynamical models, the deep-inelastic transfer (DIT) model and the constrained molecular dynamics (CoMD) model, followed by the de-excitation code GEMINI. …”
    Get full text
    Article
  19. 239

    Radionuclides as inorganic contaminants of the aquatic environment by Agnieszka Dołhańczuk-Śródka, Daniel Janecki, Alicja Gawdzik

    Published 2025-01-01
    “…Radon-222 is produced from the decay of Ra-226 and is an alpha particle emitter. Radon generated in the ground has the ability to migrate into the upper layers of soil, the atmosphere, and natural water reservoirs. …”
    Get full text
    Article
  20. 240

    Theranostics for neuroblastoma: making molecular radiotherapy work better by Gawne, PJ, Bryant, HE, DuBois, SG, George, SL, Gray, J, Knox, L, Matchett, KB, Peet, C, Vallis, KA, Wallace, HJ, Wan, S, Gaze, MN

    Published 2025
    “…These include development of alternative vectors targeting somatostatin receptors and GD2, isotopes such as alpha particle and Auger electron emitters with different radiation characteristics, and combinations with external beam radiotherapy, immunotherapy and deoxyribonucleic acid (DNA) damage repair inhibitors. …”
    Journal article