Gamma-ray measurements in D3 He fusion plasma experiments on JET

Līga Avotiņa; Larisa Baumane; Mihails Haļitovs; Patrīcija Kalniņa; Gunta Ķizāne; Elza Lagzdiņa; Andris Leščinskis; Elīna Pajuste; Toms Elvijs Šusts; Anete Stīne Teimane; Aigars Vītiņš; Rūdolfs Jānis Zabolockis; Artūrs Zariņš; JET Contributors

doi:10.1016/j.nima.2022.166586

Gamma-ray measurements in D3 He fusion plasma experiments on JET

Līga Avotiņa
, Larisa Baumane
, Mihails Haļitovs
, Patrīcija Kalniņa
, Gunta Ķizāne
, Elza Lagzdiņa
, Andris Leščinskis
, Elīna Pajuste
, Toms Elvijs Šusts
, Anete Stīne Teimane
, Aigars Vītiņš
, Rūdolfs Jānis Zabolockis
, Artūrs Zariņš
, JET Contributors

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

4 Citations (Scopus)

Abstract

Using capabilities of the gamma-ray spectrometry, fusion born alpha-particles were studied in recent D-³He plasma experiments on JET. A substantial population of the alpha-particles was generated in the ³He-rich plasma due to the ³He(D, p)⁴He reaction. Fast deuterium ions of the neutral beam injection (NBI) heating were accelerated to MeV energies with three-ion scenario D-(D_NBI)-³He using radio frequency waves in the ion cyclotron range of frequencies (ICRF). A high reaction rate allowed to measure the alpha-particle production rate and their spatial distribution in the plasma by detecting 16.7-MeV gamma-rays from the ³He(D, γ)⁵Li reaction, which is a weak branch of ³He(D, p)⁴He reaction. A branching ratio of gamma-ray transitions to the ground and the first excited states of ⁵Li was obtained. Due to the beryllium is a main impurity of JET plasmas, intensive gamma-rays from the ⁹Be(D, nγ)¹⁰B, ⁹Be(D, pγ)¹⁰Be and ⁹Be(α, nγ)¹²C reactions were observed. Exploitation of the reaction cross-sections and the Doppler shape analysis (DSA) of gamma-lines in the recorded spectra provided the possibility to reconstruct distribution functions of the confined D-ions and the fusion-born alpha-particles.

Original language	English
Article number	166586
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	1031
DOIs	https://doi.org/10.1016/j.nima.2022.166586
Publication status	Published - 11 May 2022

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SDG 7 Affordable and Clean Energy

Keywords

Alpha-particles
Fusion rate
Fusion reaction
Gamma-ray spectrometry
Tokamak plasma

OECD Field of Science

1.3 Physical Sciences

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10.1016/j.nima.2022.166586

Cite this

Avotiņa, L., Baumane, L., Haļitovs, M., Kalniņa, P., Ķizāne, G., Lagzdiņa, E., Leščinskis, A., Pajuste, E., Šusts, T. E., Teimane, A. S., Vītiņš, A., Zabolockis, R. J., Zariņš, A., & Contributors, JET. (2022). Gamma-ray measurements in D3 He fusion plasma experiments on JET. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1031, Article 166586. https://doi.org/10.1016/j.nima.2022.166586

@article{80a52517ca704e498fbe1236b9476b8b,

title = "Gamma-ray measurements in D3 He fusion plasma experiments on JET",

abstract = "Using capabilities of the gamma-ray spectrometry, fusion born alpha-particles were studied in recent D-3He plasma experiments on JET. A substantial population of the alpha-particles was generated in the 3He-rich plasma due to the 3He(D, p)4He reaction. Fast deuterium ions of the neutral beam injection (NBI) heating were accelerated to MeV energies with three-ion scenario D-(DNBI)-3He using radio frequency waves in the ion cyclotron range of frequencies (ICRF). A high reaction rate allowed to measure the alpha-particle production rate and their spatial distribution in the plasma by detecting 16.7-MeV gamma-rays from the 3He(D, γ)5Li reaction, which is a weak branch of 3He(D, p)4He reaction. A branching ratio of gamma-ray transitions to the ground and the first excited states of 5Li was obtained. Due to the beryllium is a main impurity of JET plasmas, intensive gamma-rays from the 9Be(D, nγ)10B, 9Be(D, pγ)10Be and 9Be(α, nγ)12C reactions were observed. Exploitation of the reaction cross-sections and the Doppler shape analysis (DSA) of gamma-lines in the recorded spectra provided the possibility to reconstruct distribution functions of the confined D-ions and the fusion-born alpha-particles.",

keywords = "Alpha-particles, Fusion rate, Fusion reaction, Gamma-ray spectrometry, Tokamak plasma",

author = "Līga Avotiņa and Larisa Baumane and Mihails Haļitovs and Patrīcija Kalniņa and Gunta Ķizāne and Elza Lagzdiņa and Andris Le{\v s}{\v c}inskis and Elīna Pajuste and {\v S}usts, \{Toms Elvijs\} and Teimane, \{Anete Stīne\} and Aigars Vītiņ{\v s} and Zabolockis, \{Rūdolfs Jānis\} and Artūrs Zariņ{\v s} and JET Contributors",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = may,

day = "11",

doi = "10.1016/j.nima.2022.166586",

language = "English",

volume = "1031",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

issn = "0168-9002",

publisher = "Elsevier B.V.",

}

Avotiņa, L, Baumane, L, Haļitovs, M , Kalniņa, P, Ķizāne, G, Lagzdiņa, E, Leščinskis, A , Pajuste, E, Šusts, TE, Teimane, AS , Vītiņš, A , Zabolockis, RJ , Zariņš, A & Contributors, JET 2022, 'Gamma-ray measurements in D3 He fusion plasma experiments on JET', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 1031, 166586. https://doi.org/10.1016/j.nima.2022.166586

TY - JOUR

T1 - Gamma-ray measurements in D3 He fusion plasma experiments on JET

AU - Avotiņa, Līga

AU - Baumane, Larisa

AU - Haļitovs, Mihails

AU - Kalniņa, Patrīcija

AU - Ķizāne, Gunta

AU - Lagzdiņa, Elza

AU - Leščinskis, Andris

AU - Pajuste, Elīna

AU - Šusts, Toms Elvijs

AU - Teimane, Anete Stīne

AU - Vītiņš, Aigars

AU - Zabolockis, Rūdolfs Jānis

AU - Zariņš, Artūrs

AU - Contributors, JET

PY - 2022/5/11

Y1 - 2022/5/11

N2 - Using capabilities of the gamma-ray spectrometry, fusion born alpha-particles were studied in recent D-3He plasma experiments on JET. A substantial population of the alpha-particles was generated in the 3He-rich plasma due to the 3He(D, p)4He reaction. Fast deuterium ions of the neutral beam injection (NBI) heating were accelerated to MeV energies with three-ion scenario D-(DNBI)-3He using radio frequency waves in the ion cyclotron range of frequencies (ICRF). A high reaction rate allowed to measure the alpha-particle production rate and their spatial distribution in the plasma by detecting 16.7-MeV gamma-rays from the 3He(D, γ)5Li reaction, which is a weak branch of 3He(D, p)4He reaction. A branching ratio of gamma-ray transitions to the ground and the first excited states of 5Li was obtained. Due to the beryllium is a main impurity of JET plasmas, intensive gamma-rays from the 9Be(D, nγ)10B, 9Be(D, pγ)10Be and 9Be(α, nγ)12C reactions were observed. Exploitation of the reaction cross-sections and the Doppler shape analysis (DSA) of gamma-lines in the recorded spectra provided the possibility to reconstruct distribution functions of the confined D-ions and the fusion-born alpha-particles.

AB - Using capabilities of the gamma-ray spectrometry, fusion born alpha-particles were studied in recent D-3He plasma experiments on JET. A substantial population of the alpha-particles was generated in the 3He-rich plasma due to the 3He(D, p)4He reaction. Fast deuterium ions of the neutral beam injection (NBI) heating were accelerated to MeV energies with three-ion scenario D-(DNBI)-3He using radio frequency waves in the ion cyclotron range of frequencies (ICRF). A high reaction rate allowed to measure the alpha-particle production rate and their spatial distribution in the plasma by detecting 16.7-MeV gamma-rays from the 3He(D, γ)5Li reaction, which is a weak branch of 3He(D, p)4He reaction. A branching ratio of gamma-ray transitions to the ground and the first excited states of 5Li was obtained. Due to the beryllium is a main impurity of JET plasmas, intensive gamma-rays from the 9Be(D, nγ)10B, 9Be(D, pγ)10Be and 9Be(α, nγ)12C reactions were observed. Exploitation of the reaction cross-sections and the Doppler shape analysis (DSA) of gamma-lines in the recorded spectra provided the possibility to reconstruct distribution functions of the confined D-ions and the fusion-born alpha-particles.

KW - Alpha-particles

KW - Fusion rate

KW - Fusion reaction

KW - Gamma-ray spectrometry

KW - Tokamak plasma

UR - https://www.sciencedirect.com/science/article/abs/pii/S0168900222001796

UR - https://www.scopus.com/pages/publications/85127062464

U2 - 10.1016/j.nima.2022.166586

DO - 10.1016/j.nima.2022.166586

M3 - Article

SN - 0168-9002

VL - 1031

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

M1 - 166586

ER -

Gamma-ray measurements in D3 He fusion plasma experiments on JET

Abstract

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Keywords

OECD Field of Science

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