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As-deposited and unencapsulated GeSe$_{1-x}$Te$_x$ ($x = 0, 0.25$) 3-$\mu$m-thick amorphous films on Si(001) were obtained via the co-evaporation technique to study the effect of selenium (Se) substitution for tellurium (Te) on the GeSe…

Materials Science · Physics 2025-01-22 P. Armand , R. Escalier , G. Silly , J. Lizion , A. Piarristeguy

The reaction d(\vec\gamma,np) has been studied using the tagged and polarised LADON gamma ray beam at an energy 30 - 50 MeV to investigate the existence of narrow dibaryonic resonances recently suggested from the experimental measurements…

Nuclear Experiment · Physics 2009-10-31 D. Babusci , V. Bellini , M. Capogni , L. Casano , A. D'Angelo , F. Ghio , B. Girolami , D. Moricciani , C. Schaerf

We report our detailed investigation of high-resolution imaging using secondary electrons (SE) with a subnanometer probe in an aberration-corrected transmission electron microscope, Hitachi HD2700C. This instrument also allows us to acquire…

Materials Science · Physics 2010-08-31 H. Inada , D. Su , R. F. Egerton , M. Konno , L. Wu , J. Ciston , J. Wall , Y. Zhu

We use a complete sample of Lya emission-line selected AGNs obtained from nine deep blank fields observed with the grism spectrographs on the Galaxy Evolution Explorer (GALEX) satellite to measure the normalization and spectral shape of the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 A. J. Barger , L. L. Cowie

We construct full broadband models in an analysis of Suzaku observations of nearby Seyfert 1 AGN (z<0.2) with exposures >50ks and with greater than 30000 counts in order to study their iron line profiles. This results in a sample of 46…

High Energy Astrophysical Phenomena · Physics 2015-06-11 A. R. Patrick , J. N. Reeves , D. Porquet , A. G. Markowitz , V. Braito , A. P. Lobban

This is a theoretical investigation on the formation of the linearly polarized line spectrum of ionized cerium in the sun. We calculate the scattering line polarization pattern emergent from a plane-parallel layer of Ce {\sc ii} atoms…

Astrophysics · Physics 2009-11-11 R. Manso Sainz , E. Landi Degl'Innocenti , J. Trujillo Bueno

An ultrashort-pulse Cr^{2+}:ZnSe laser is a novel broadband source for sensitive high resolution molecular spectroscopy. A 130-fs pulse allows covering of up to 380 cm^-1 spectral domain around 2.4 $\mu$m which is analyzed simultaneously…

Natural silver targets have been irradiated by using a 50 MeV alpha-particle beam in order to measure the activation cross sections of radioisotopes in the 40-50 MeV energy range. Among the radio-products there are medically important…

Nuclear Experiment · Physics 2021-03-22 F. Ditrói , S. Takács , H. Haba , Y. Komori , M. Aikawa , M. Saito , T. Murata

The Nab (Neutron a b) experiment is designed to measure the beta-antineutrino angular correlation in free neutron $\beta$ decay with an ultimate precision goal of 0.1%, providing input for tests of Cabibbo-Kobayashi-Maskawa (CKM) matrix…

The sources of ultra-high energy (UHE) cosmic rays, which can have energies up to 10^20 eV, remain a mystery. UHE neutrinos may provide important clues to understanding the nature of cosmic-ray sources. ARIANNA aims to detect UHE neutrinos…

The Spin Asymmetries of the Nucleon Experiment (SANE) performed inclusive, double-polarized electron scattering measurements of the proton at the Continuous Electron Beam Accelerator Facility at Jefferson Lab. A novel detector array…

This Letter details a measurement of the ionization yield ($Q_y$) of 6.7 keV $^{40}Ar$ atoms stopping in a liquid argon detector. The $Q_y$ of 3.6-6.3 detected $e^{-}/\mbox{keV}$, for applied electric fields in the range 240--2130 V/cm, is…

High-resolution tunable laser spectroscopy is used to measure time-resolved absorption spectra for ten neutral uranium transitions and six singly-ionized transitions in a laser produced plasma. Spectral lineshapes are analyzed to determine…

We report on a scanning microscopy technique for atom-number-resolved imaging of excited-state atoms. A tightly focused laser beam leads to local autoionization, and the resulting ions are counted electronically. Scanning the beam across…

Atomic Physics · Physics 2015-06-12 G. Lochead , D. Boddy , D. P. Sadler , C. S. Adams , M. P. A. Jones

We characterised and studied, in the radio band, a sample of candidates of high Rotation Measure (RM). These point-like objects show a strong depolarisation at 21cm. This feature suggests the presence of a very dense medium surrounding them…

Astrophysics of Galaxies · Physics 2016-02-17 Alice Pasetto , Alex Kraus , Karl-Heinz Mack , Gabriele Bruni , Carlos Carrasco-Gonzalez

We propose a new methodology for probing the cosmological variability of alpha from pairs of FeII lines (SIDAM, single ion differential alpha measurement) observed in individual exposures from a high resolution spectrograph. By this we…

Astrophysics · Physics 2009-11-10 S. A. Levshakov , M. Centurion , P. Molaro , S. D'Odorico

We present results from a 900 ks exposure of NGC 3783 with the High-Energy Transmission Grating Spectrometer on board the Chandra X-ray Observatory. The resulting X-ray spectrum has the best combination of signal-to-noise and resolution…

Mechanochemically synthesized amorphous 50SISOMO [50AgI-25Ag_2O-25MoO_3] fast ionic conductor shows high ionic conductivity of ~ 6x10^-3 {\Omega}^-1 cm-1 at room temperature. The highest ionic conductivity is achieved for 36 h milled…

Materials Science · Physics 2012-04-10 Saurabh Dayal , K. Shahi

Although reliable models may predict the detection efficiency of semiconductor detectors, measurements are needed to check the parameters supplied by the manufacturers namely the thicknesses of dead layer, beryllium window and crystal…