کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8168965 1526296 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Possible influence of surface oxides on the optical response of high-purity niobium material used in the fabrication of superconducting radio frequency cavity
ترجمه فارسی عنوان
تاثیر احتمالی اکسید سطحی بر پاسخ نوری مواد نایوبیم با خلوص بالا که در تولید حفره فرکانس رادیویی ابررسانا مورد استفاده قرار می گیرد
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
چکیده انگلیسی
We have investigated the possible influence of surface oxides on the optical properties of a high-purity niobium (Nb) material for fabrication of superconducting radio frequency (SCRF) cavities. Various peaks in the infrared region were identified using Fourier transform infrared and Raman spectroscopy. Optical response functions such as complex refractive index, dielectric and conductivity of niobium were compared with the existing results on oxides free Nb and Cu. It was observed that the presence of a mixture of niobium-oxides, and probably near other surface impurities, appreciably influence the conducting properties of the material causing deviation from the typical metallic characteristics. In this way, the key result of this work is the observation, identification of vibrational modes of some of surface complexes and study of its influences on the optical responses of materials. This method of spectroscopic investigation will help in understanding the origin of degradation of performance of SCRF cavities.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 830, 11 September 2016, Pages 59-66
نویسندگان
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