Drift compensation in dual start/stop data acquisition positron lifetime measurements

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

USFD: Twitter NER with Drift Compensation and Linked Data

This paper describes a pilot NER system for Twitter, comprising the USFD system entry to the W-NUT 2015 NER shared task. The goal is to correctly label entities in a tweet dataset, using an inventory of ten types. We employ structured learning, drawing on gazetteers taken from Linked Data, and on unsupervised clustering features, and attempting to compensate for stylistic and topic drift – a ke...

متن کامل

Lifetime Measurements in 178Hf

Lifetimes of levels from K(π) = 2(+), K(π) = 4(+) and several K(π) = 0(+) bands have been measured in the (178)Hf nucleus using the GRID technique. Lifetimes of the 2(+) and 3(+) levels were measured within the K(π) = 2(+) γ band. A lower limit was established for the lifetime of the 4(+) level of the K(π) = 4(+) band. The resulting upper limits for the absolute B(E2) values exclude collective ...

متن کامل

Lifetime measurements in Tl

Lifetimes are reported for the 6s6p P1, 6s6d D2 and 6s7s S0 levels in Hg-like Tl II, measured using beam-foil excitation. The values obtained were τ(P1) = 0.59 ± 0.02 ns, τ(P1) = 39 ± 2 ns, τ(D2) = 6.5 ± 0.5 ns, and τ(S0) = 3.0 ± 0.4 ns. Isoelectronic trends for line strengths of the resonance and intercombination transitions are studied through comparisons with earlier measurements for Hg I–Bi...

متن کامل

Trends in Lifetime Measurements

The interpretation of lifetime measurements and new characterization techniques are addressed in this paper. Parameters such as surface/interface recombination, sample thickness, and injection level are discussed. Novel characterization techniques using frequency-dependent capacitance, conductance, or impedance measurements are described and are shown to be useful for thin layer, e.g., epitaxia...

متن کامل

Positron lifetime measurements of hydrogen passivation of cation vacancies in yttrium aluminum oxide garnets

A charge compensation mechanism is proposed for cation vacancy defects in complex oxides based on positron lifetime measurements, infrared spectroscopy, and composition analysis. Defects were characterized in samples of yttrium aluminum garnet grown in O2 or Ar. However, no positron trapping was detected in samples grown in H2. This is attributed to decoration of cation vacancies with hydrogen,...

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: Japanese Journal of Applied Physics

سال: 2020

ISSN: 0021-4922,1347-4065

DOI: 10.35848/1347-4065/ab6f2d