Mixing X-rays and light

CMOS X-rays detector array based on scintillating light guides

This paper describes a pixel imaging array consisting in 400 m × 400 m photodiodes fabricated in CMOS technology. An array of scintillating CsI:Tl crystals is placed above the photodiodes. These crystals are encapsulated in aluminum walls, forming a light path that guides the visible light produced by the scintillating crystal into the photodiodes. In this way, the X-ray energy is first convert...

Triboluminescence and X-Rays

Triboluminescence is shown to produce X-rays from the nanoparticles (NPs) that form as the sticky acrylic adhesive of Scotch tape is peeled from the polyethylene (PE) roll in a vacuum. Prior to peeling, atoms in the adhesive are not under electromagnetic (EM) confinement and have full thermal kT energy. But upon peeling, the atoms in NPs that form in the gap between adhesive and PE are under EM...

Subject headings: galaxies: general—galaxies: spiral—X-rays: general—X-rays: galaxies—X-rays: ISM

We present results from the analysis of deep ROSAT HRI and PSPC observations of the spiral galaxy M81. The inferred total (0.5–2 keV band) luminosity of M81 is ∼ 3×10 ergs s, excluding the contribution from identified interlopers found within the D25 ellipse. The nucleus of the galaxy alone accounts for about 65% of this luminosity. The rest is due to 26 other X-ray sources (contributing ∼ 10%)...

Quantum Electrodynamics and Light Rays

Light is a quantum electrodynamic entity and hence bundles of rays must be describable in this framework. We demonstrate the duality in the description of elementary optical phenomena in terms of two-point correlation functions and in terms of collections of light rays. The generalizations necessary to deal with two-slit interference and diffraction by a rectangular slit are worked out and the ...

General Practice and X-Rays