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

Zinātniskās darbības rezultāts: Devums žurnālam › Zinātniskais raksts (žurnālā) › koleģiāli recenzēts

4 Atsauces (Scopus)

Kopsavilkums

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.

Oriģinālvaloda	Angļu
Raksta numurs	166586
Žurnāls	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Sējums	1031
DOIs	https://doi.org/10.1016/j.nima.2022.166586
Publikācijas statuss	Publicēts - 11 maijs 2022

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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, Zinātniskais raksts 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, sēj. 1031, 166586. https://doi.org/10.1016/j.nima.2022.166586

Gamma-ray measurements in D3 He fusion plasma experiments on JET. / Avotiņa, Līga; Baumane, Larisa; Haļitovs, Mihails u.c.
(gadā): Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Sēj. 1031, 166586, 11.05.2022.

Zinātniskās darbības rezultāts: Devums žurnālam › Zinātniskais raksts (žurnālā) › koleģiāli recenzēts

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

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