کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8176105 | 1526363 | 2014 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Extraction of thermalized projectile fragments from a large volume gas cell
ترجمه فارسی عنوان
استخراج ترانزیستورهای پرتابه از یک سلول گاز بزرگ حجم
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کلمات کلیدی
قطعات پروژکتیو، حرارتی سلول های گاز، یونهای رادیواکتیو،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
چکیده انگلیسی
Experiments to determine the stopping and extraction efficiency of energetic (90Â MeV/u) 76Ga fragments in a 1.2Â m long gas cell filled with helium at 123Â mbar are reported. The thermalized ions were transported by DC and RF fields as well as gas flow, then jetted through a supersonic nozzle into a RF quadrupole ion-guide and accelerated into an electrostatic beam line. The ions were collected in either a Faraday cup or a silicon beta-detector immediately after acceleration or after magnetic analysis. The range distributions of the ions and extraction efficiency of the system were measured for different implantation rates and compared with the theoretically calculated values. The singly charged 76Ga ions were observed as [76Ga(H2O)n]+ molecular ions with n=0, 1, and 2. The stopping efficiency and the extraction efficiency were obtained from the measured distributions and compared to previous results from other devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 763, 1 November 2014, Pages 543-546
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 763, 1 November 2014, Pages 543-546
نویسندگان
K. Cooper, C.S. Sumithrarachchi, D.J. Morrissey, A. Levand, J.A. Rodriguez, G. Savard, S. Schwarz, B. Zabransky,