Analysis of refill curve shape in ultrasound contrast agent studies

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/135021/1/mp9534.pd

Interim report for the International Muon Collider Collaboration (IMCC)

The International Muon Collider Collaboration (IMCC) [1] was established in 2020 following the recommendations of the European Strategy for Particle Physics (ESPP) and the implementation of the European Strategy for Particle Physics-Accelerator R&D Roadmap by the Laboratory Directors Group [2], hereinafter referred to as the the European LDG roadmap. The Muon Collider Study (MuC) covers the accelerator complex, detectors and physics for a future muon collider. In 2023, European Commission support was obtained for a design study of a muon collider (MuCol) [3]. This project started on 1st March 2023, with work-packages aligned with the overall muon collider studies. In preparation of and during the 2021-22 U.S. Snowmass process, the muon collider project parameters, technical studies and physics performance studies were performed and presented in great detail. Recently, the P5 panel [4] in the U.S. recommended a muon collider R&D, proposed to join the IMCC and envisages that the U.S. should prepare to host a muon collider, calling this their "muon shot". In the past, the U.S. Muon Accelerator Programme (MAP) [5] has been instrumental in studies of concepts and technologies for a muon collider.Comment: This document summarises the International Muon Collider Collaboration (IMCC) progress and status of the Muon Collider R&D programm

Au-doped ZnO sol-gel thin films: An experimental investigation on physical and photoluminescence properties

International audienceUndoped and Au-doped ZnO thin films were prepared on glass substrates by sol-gel process and dip-coating technique. The effects of Au concentration (10–30 at%) on structural, morphological and optical properties of the ZnO films were studied using X-ray diffraction (XRD), Raman spectroscopy, field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), UV–Vis–NIR spectrometry, Hall-effect measurements and photoluminescence (PL) spectroscopy. XRD results show that all films crystallized in a hexagonal wurtzite structure and are highly c-axis oriented. The crystal quality of the films is found to decrease with the increase in Au doping. A weak diffraction peak related to Au cubic phase is also observed at Au concentration higher than 10 at%. The Raman studies confirmed that the film's crystallinity degraded with increasing Au content. FE-SEM micrographs and AFM images show that both morphology and surface roughness are affected by the Au doping concentration. UV–Vis–NIR optical spectra reveal that increasing Au doping into ZnO films enhances their transparency. Photoluminescence measurements at room temperature put into evidence the presence of two intense bands at 373.6 and 385 nm in the UV spectra and four very weak emission bands in the visible spectral range. All the visible emissions are found to increase with Au content. The emission at 373.6 is maximal for the film doped at 20 at%, whereas the one at 385 nm reaches its maximum intensity in the film doped at 10 at%