Measurements of the production and transport of helium ash in the TFTR tokamak

E. J. Synakowski; R. E. Bell; R. V. Budny; C. E. Bush; P. C. Efthimion; B. Grek; D. W. Johnson; L. C. Johnson; B. Leblanc; H. Park; A. T. Ramsey; G. Taylor

doi:10.1103/PhysRevLett.75.3689

Measurements of the production and transport of helium ash in the TFTR tokamak

E. J. Synakowski, R. E. Bell, R. V. Budny, C. E. Bush, P. C. Efthimion, B. Grek, D. W. Johnson, L. C. Johnson, B. Leblanc, H. Park, A. T. Ramsey, G. Taylor

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

Helium ash production and transport have been measured in TFTR deuterium-tritium plasmas using charge-exchange recombination spectroscopy. The helium ash confinement time, including recycling effects, is 6-10 times the energy confinement time and is compatible with sustained ignition in a reactor. The ash confinement time is dominated by edge pumping rates rather than core transport. The measured evolution of the local thermal ash density is consistent with modeling based on previously measured helium transport coefficients and classical slowing down of the alpha particles.

Original language	English (US)
Pages (from-to)	3689-3692
Number of pages	4
Journal	Physical review letters
Volume	75
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.75.3689
State	Published - 1995

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.75.3689

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title = "Measurements of the production and transport of helium ash in the TFTR tokamak",

abstract = "Helium ash production and transport have been measured in TFTR deuterium-tritium plasmas using charge-exchange recombination spectroscopy. The helium ash confinement time, including recycling effects, is 6-10 times the energy confinement time and is compatible with sustained ignition in a reactor. The ash confinement time is dominated by edge pumping rates rather than core transport. The measured evolution of the local thermal ash density is consistent with modeling based on previously measured helium transport coefficients and classical slowing down of the alpha particles.",

author = "Synakowski, \{E. J.\} and Bell, \{R. E.\} and Budny, \{R. V.\} and Bush, \{C. E.\} and Efthimion, \{P. C.\} and B. Grek and Johnson, \{D. W.\} and Johnson, \{L. C.\} and B. Leblanc and H. Park and Ramsey, \{A. T.\} and G. Taylor",

year = "1995",

doi = "10.1103/PhysRevLett.75.3689",

language = "English (US)",

volume = "75",

pages = "3689--3692",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "20",

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TY - JOUR

T1 - Measurements of the production and transport of helium ash in the TFTR tokamak

AU - Synakowski, E. J.

AU - Bell, R. E.

AU - Budny, R. V.

AU - Bush, C. E.

AU - Efthimion, P. C.

AU - Grek, B.

AU - Johnson, D. W.

AU - Johnson, L. C.

AU - Leblanc, B.

AU - Park, H.

AU - Ramsey, A. T.

AU - Taylor, G.

PY - 1995

Y1 - 1995

N2 - Helium ash production and transport have been measured in TFTR deuterium-tritium plasmas using charge-exchange recombination spectroscopy. The helium ash confinement time, including recycling effects, is 6-10 times the energy confinement time and is compatible with sustained ignition in a reactor. The ash confinement time is dominated by edge pumping rates rather than core transport. The measured evolution of the local thermal ash density is consistent with modeling based on previously measured helium transport coefficients and classical slowing down of the alpha particles.

AB - Helium ash production and transport have been measured in TFTR deuterium-tritium plasmas using charge-exchange recombination spectroscopy. The helium ash confinement time, including recycling effects, is 6-10 times the energy confinement time and is compatible with sustained ignition in a reactor. The ash confinement time is dominated by edge pumping rates rather than core transport. The measured evolution of the local thermal ash density is consistent with modeling based on previously measured helium transport coefficients and classical slowing down of the alpha particles.

UR - https://www.scopus.com/pages/publications/4243490225

UR - https://www.scopus.com/inward/citedby.url?scp=4243490225&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.75.3689

DO - 10.1103/PhysRevLett.75.3689

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SN - 0031-9007

VL - 75

SP - 3689

EP - 3692

JO - Physical review letters

JF - Physical review letters

IS - 20

ER -

Measurements of the production and transport of helium ash in the TFTR tokamak

Abstract

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