Pisces Program Plasma Surface Interactions Research

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Pisces Program Plasma Surface Interactions Research

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Author :
language : en
Publisher:
Release Date : 1989

Pisces Program Plasma Surface Interactions Research written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.

Pisces Program

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Author : University of California, Los Angeles. PISCES Program
language : en
Publisher:
Release Date : 1990

Pisces Program written by University of California, Los Angeles. PISCES Program and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.

Pisces Program

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Author : University of California, Los Angeles. PISCES Program
language : en
Publisher:
Release Date : 1989

Pisces Program written by University of California, Los Angeles. PISCES Program and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.

Pisces Program Plasma Surface Interactions Research

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Author :
language : en
Publisher:
Release Date : 1989

Pisces Program Plasma Surface Interactions Research written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.

This paper discusses the following about the Pisces program: Major objectives of the program; Staff in the PISCES program at UCLA; Highlights in the program; Collaborations with other institutions; PISCES-A facility; PISCES-B facility; Fast scanning Langmuir probe; Omegatron mass spectrometer; Spectroscopic diagnostics; Data acquisition system; Redeposition effect on carbon chemical erosion; Erosion of carbon tokamakium from TFTR; Effect of boron-doping on carbon chemical erosion; Radiation enhanced sublimation of carbon; Surface analysis of TEXTOR titles; Spectroscopic analysis of carbon impurities; Biased limiter and divertor; Biased divertor channel; Gaseous divertor experiments; Presheath profile measurements; Particle transport in CCT tokamak; and Biased divertor experiments in CCT.

Progress Report On Pisces

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Author : R. W. Conn
language : en
Publisher:
Release Date : 1987

Progress Report On Pisces written by R. W. Conn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.

Pisces Program

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Author :
language : en
Publisher:
Release Date : 1992

Pisces Program written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.

This program investigates and characterizes the behavior of materials under plasma bombordment, in divertor regions. The PISCES facility is used to study divertor and plasma edge management concepts (in particular gas target divertors), as well as edge plasma turbulence and transport. The plasma source consists of a hot LaB[sub 6] cathode with an annular, water-cooled anode and attached drift tube. This cross sectional area of the plasma can be adjusted between 3 and 10 cm. A fast scanning diagnostic probe system was used for mapping plasma density profiles during biased limiter and divertor simulation experiments. Some experimental data are given on: (1) materials and surface physics, (2) edge plasma physics, and (3) a theoretical analysis of edge plasma modelling.

A New Plasma Surface Interactions Research

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Author : R. W. Conn
language : en
Publisher:
Release Date : 1989

A New Plasma Surface Interactions Research written by R. W. Conn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.

Pisces Program

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Author :
language : en
Publisher:
Release Date : 1992

Pisces Program written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.

This program investigates and characterizes the behavior of materials under plasma bombordment, in divertor regions. The PISCES facility is used to study divertor and plasma edge management concepts (in particular gas target divertors), as well as edge plasma turbulence and transport. The plasma source consists of a hot LaB6 cathode with an annular, water-cooled anode and attached drift tube. This cross sectional area of the plasma can be adjusted between 3 and 10 cm. A fast scanning diagnostic probe system was used for mapping plasma density profiles during biased limiter and divertor simulation experiments. Some experimental data are given on: (1) materials and surface physics, (2) edge plasma physics, and (3) a theoretical analysis of edge plasma modelling.

A New Plasma Surface Interactions Research Facility

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Author :
language : en
Publisher:
Release Date : 1989

A New Plasma Surface Interactions Research Facility written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.

A new plasma-surface interactions research facility: PISCES-B has been designed and constructed at University of California, Los Angeles. The entire vacuum chamber is bakable and a base pressure of the order of 10−8 Torr is attainable using two turbo molecular pumps with a total pumping speed of 6000 l/s. The PISCES-B facility can generate continuous plasmas of argon, helium, hydrogen, deuterium and nitrogen. The density of these plasmas ranges from 1 x 10−11 to 3 x 10−13 cm−3 and the electron temperature ranges from 3 to 51 eV. The plasma bombardment flux to a target surface inserted in the plasma column can be varied from 1 x 1017 to 8 x 1018 ions cm−2 s−1. Due to the high pumping speed, the neutral pressure of the working gas during plasma generation is controllable in the wide range from 3 x 10−5 to 1 x 10−3 Torr. These conditions are similar to those seen at the limiter and divertor areas in toroidal fusion devices. Using the PISCES-B facility, first materials erosion experiments have been conducted on 3% boronized graphites and iso-graphites as the reference materials. The chemical sputtering yield due to hydrogen plasma bombardment at 300 eV for 3% boronized graphite has been found to be about 30% smaller than that for iso-graphites at temperatures from room temperature to 900°C. Also, radiation enhanced sublimation due to hydrogen plasma bombardment at 400 eV is found to be suppressed by 20-30% for 3% boronized graphite at temperatures up to 1300°C. No significant surface composition change is observed after hydrogen plasma bombardment to a fluence of the order of 1022 ions cm−2. 30 refs., 9 figs., 2 tabs.

Pisces Program

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Author : University of California, Los Angeles. Institute of Plasma and Fusion Research
language : en
Publisher:
Release Date : 1991

Pisces Program written by University of California, Los Angeles. Institute of Plasma and Fusion Research and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Plasma-wall interactions categories.