کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1828873 1526489 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Towards a magnetic field stabilization at ISOLTRAP for high-accuracy mass measurements on exotic nuclides
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
پیش نمایش صفحه اول مقاله
Towards a magnetic field stabilization at ISOLTRAP for high-accuracy mass measurements on exotic nuclides
چکیده انگلیسی

The field stability of a mass spectrometer plays a crucial role in the accuracy of mass measurements. In the case of mass determination of short-lived nuclides with a Penning trap, major causes of fluctuations are temperature variations in the vicinity of the trap and pressure changes in the liquid helium cryostat of the superconducting magnet. Thus systems for the temperature and pressure stabilization of the Penning trap mass spectrometer ISOLTRAP at the ISOLDE facility at CERN have been installed. A reduction of the temperature and pressure fluctuations by at least an order of magnitude down to ΔT≈±5mK and Δp≈±5Pa has been achieved, which corresponds to a relative magnetic field change of ΔB/B=2.7×10-9ΔB/B=2.7×10-9 and 1.1×10-101.1×10-10, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 587, Issues 2–3, 21 March 2008, Pages 464–473
نویسندگان
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