Painting with X-rays: virtual beams for ideal data collection

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Flare hard X-rays from neutral beams

A new mechanism is presented for the production of bremsstrahlung radiation from neutral beams (p+,e−) and its possible relevance to flare heating and production of hard xray bursts is discussed. Beam electrons lag behind the protons, due to differential drag in collisions with the background, but their longitudinal velocities are closely tied to the protons by the electric field generated. How...

متن کامل

Algebraic Reconstruction and Post-processing in Incomplete Data Computed Tomography: From X-rays to Laser Beams

Methods of computed tomography are well developed and widely used in medicine and industry. If tomographic data are complete, it is possible to reconstruct the images with submillimeter resolution. If the data are incomplete, tomograms may blur, i.e. their resolution degrades, noise increases and artifacts form. The situation is worst if measurement data are so poor that the system of equations...

متن کامل

A comprehensive common weights data envelopment analysis model: Ideal and anti-ideal virtual decision making units approach

Data envelopment analysis (DEA) calculates the relative efficiency of homogenous decision-making units (DMUs) with multiple inputs and outputs. Classic DEA models usually suffer from several issues such as: discrimination power, variable weights of inputs/outputs, inaccurate efficiency estimation for small number of DMUs, incapability in working with zero and negative data, and not having exter...

متن کامل

X-ray Diffraction Data Collection

“point” and “area” (originally film) detectors. The first X-ray diffraction experiment by Friedrich and Knipping [1] used film, but within the same year Bragg was using an ionization chamber mounted on a rotating arm [2]. The advantage of Bragg's X-ray detector was that it defined precisely the angle of the diffracted rays and, in general, gave more accurate intensity measurements. The advantag...

متن کامل

Measurement of stereotactic beam data of 9 MV X-rays using diode detector

Background: Radiosurgery is a focal brain irradiation technique that delivers, usually in a single session, high dose of ionizing radiation. The presence of lateral electronic disequilibrium and steep dose gradients in small fields demands special attention to the selection of a suitable detector with respect to its size, composition and response. Materials and Methods : Small circular fields w...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Acta Crystallographica Section A Foundations and Advances

سال: 2019

ISSN: 2053-2733

DOI: 10.1107/s0108767319096442