کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5467825 1518620 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Recent progress of phase-contrast imaging at Tsinghua Thomson-scattering X-ray source
ترجمه فارسی عنوان
پیشرفت اخیر در تصویربرداری فاز کنتراست در منبع اشعه ایکس پراکندگی تسونگوا تامسون
کلمات کلیدی
پراکندگی تامسون، تصویربرداری فاز کنتراست، مونت کارلو، عملکرد فوتون،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
چکیده انگلیسی
Due to its small spot size, a Thomson-scattering X-ray source can produce high spatial coherent X-ray pulse, which is the prerequisite for phase-contrast imaging. In this paper, we will introduce the recent progress of phase-contrast imaging at Tsinghua Thomson-scattering X-ray source (TTX). Since the generation of first hard X-ray pulse at TTX in 2012, we have demonstrated the capacity of in-line phase contrast imaging using a refill of gel ink pen. And then, a Monte Carlo simulation tool for in-line phase-contrast imaging based on Thomson-scattering X-ray source has been developed. Taking advantage of this code, we calculate the typical requirement of photon numbers for in-line phase-contrast imaging based on this type of X-ray source. After the upgrade of infrared laser system and control program, the total photon yield of TTX has been increased to ∼2 × 107 photons/pulse at X-ray central energy of 25 keV and 50 keV with RMS jitter less than 6% and 4% respectively. A new run of experiments about in-line phase-contrast imaging and phase-contrast computed tomography (CT) have been carried out at TTX.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 402, 1 July 2017, Pages 364-369
نویسندگان
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