Short-Lived Radioisotope Tc 98 Synthesized by the Supernova Neutrino Process

Takehito Hayakawa, Heamin Ko, Myung Ki Cheoun, Motohiko Kusakabe, Toshitaka Kajino, Mark D. Usang, Satoshi Chiba, Ko Nakamura, Alexey Tolstov, Ken'Ichi Nomoto, Masa-Aki Hashimoto, Masaomi Ono, Toshihiko Kawano, Grant J. Mathews

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The isotope Tc98 decays to Ru98 with a half-life of 4.2×106 yr and could have been present in the early Solar System. In this Letter, we report on the first calculations of the production of Tc98 by neutrino-induced reactions in core-collapse supernovae (the ν process). Our predicted Tc98 abundance at the time of solar system formation is not much lower than the current measured upper limit raising the possibility for its detection in the not too distant future. We show that, if the initial abundance were to be precisely measured, the Tc98 nuclear cosmochronometer could be used to evaluate a much more precise value of the duration time from the last core-collapse supernova to the formation of the solar system. Moreover, a unique and novel feature of the Tc98 ν-process nucleosynthesis is the large contribution (∼20%) from charged current reactions with electron antineutrinos. This means that Tc98 becomes a unique new ν-process probe of the temperature of the electron antineutrinos.

Original languageEnglish
Article number102701
JournalPhysical Review Letters
Volume121
Issue number10
DOIs
Publication statusPublished - Sep 4 2018

Fingerprint

solar system
supernovae
antineutrinos
neutrinos
nuclear fusion
half life
electrons
isotopes
probes
decay
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Hayakawa, T., Ko, H., Cheoun, M. K., Kusakabe, M., Kajino, T., Usang, M. D., ... Mathews, G. J. (2018). Short-Lived Radioisotope Tc 98 Synthesized by the Supernova Neutrino Process. Physical Review Letters, 121(10), [102701]. https://doi.org/10.1103/PhysRevLett.121.102701

Short-Lived Radioisotope Tc 98 Synthesized by the Supernova Neutrino Process. / Hayakawa, Takehito; Ko, Heamin; Cheoun, Myung Ki; Kusakabe, Motohiko; Kajino, Toshitaka; Usang, Mark D.; Chiba, Satoshi; Nakamura, Ko; Tolstov, Alexey; Nomoto, Ken'Ichi; Hashimoto, Masa-Aki; Ono, Masaomi; Kawano, Toshihiko; Mathews, Grant J.

In: Physical Review Letters, Vol. 121, No. 10, 102701, 04.09.2018.

Research output: Contribution to journalArticle

Hayakawa, T, Ko, H, Cheoun, MK, Kusakabe, M, Kajino, T, Usang, MD, Chiba, S, Nakamura, K, Tolstov, A, Nomoto, KI, Hashimoto, M-A, Ono, M, Kawano, T & Mathews, GJ 2018, 'Short-Lived Radioisotope Tc 98 Synthesized by the Supernova Neutrino Process', Physical Review Letters, vol. 121, no. 10, 102701. https://doi.org/10.1103/PhysRevLett.121.102701
Hayakawa T, Ko H, Cheoun MK, Kusakabe M, Kajino T, Usang MD et al. Short-Lived Radioisotope Tc 98 Synthesized by the Supernova Neutrino Process. Physical Review Letters. 2018 Sep 4;121(10). 102701. https://doi.org/10.1103/PhysRevLett.121.102701
Hayakawa, Takehito ; Ko, Heamin ; Cheoun, Myung Ki ; Kusakabe, Motohiko ; Kajino, Toshitaka ; Usang, Mark D. ; Chiba, Satoshi ; Nakamura, Ko ; Tolstov, Alexey ; Nomoto, Ken'Ichi ; Hashimoto, Masa-Aki ; Ono, Masaomi ; Kawano, Toshihiko ; Mathews, Grant J. / Short-Lived Radioisotope Tc 98 Synthesized by the Supernova Neutrino Process. In: Physical Review Letters. 2018 ; Vol. 121, No. 10.
@article{337ed4d4926f42dc918705129b237666,
title = "Short-Lived Radioisotope Tc 98 Synthesized by the Supernova Neutrino Process",
abstract = "The isotope Tc98 decays to Ru98 with a half-life of 4.2×106 yr and could have been present in the early Solar System. In this Letter, we report on the first calculations of the production of Tc98 by neutrino-induced reactions in core-collapse supernovae (the ν process). Our predicted Tc98 abundance at the time of solar system formation is not much lower than the current measured upper limit raising the possibility for its detection in the not too distant future. We show that, if the initial abundance were to be precisely measured, the Tc98 nuclear cosmochronometer could be used to evaluate a much more precise value of the duration time from the last core-collapse supernova to the formation of the solar system. Moreover, a unique and novel feature of the Tc98 ν-process nucleosynthesis is the large contribution (∼20{\%}) from charged current reactions with electron antineutrinos. This means that Tc98 becomes a unique new ν-process probe of the temperature of the electron antineutrinos.",
author = "Takehito Hayakawa and Heamin Ko and Cheoun, {Myung Ki} and Motohiko Kusakabe and Toshitaka Kajino and Usang, {Mark D.} and Satoshi Chiba and Ko Nakamura and Alexey Tolstov and Ken'Ichi Nomoto and Masa-Aki Hashimoto and Masaomi Ono and Toshihiko Kawano and Mathews, {Grant J.}",
year = "2018",
month = "9",
day = "4",
doi = "10.1103/PhysRevLett.121.102701",
language = "English",
volume = "121",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "10",

}

TY - JOUR

T1 - Short-Lived Radioisotope Tc 98 Synthesized by the Supernova Neutrino Process

AU - Hayakawa, Takehito

AU - Ko, Heamin

AU - Cheoun, Myung Ki

AU - Kusakabe, Motohiko

AU - Kajino, Toshitaka

AU - Usang, Mark D.

AU - Chiba, Satoshi

AU - Nakamura, Ko

AU - Tolstov, Alexey

AU - Nomoto, Ken'Ichi

AU - Hashimoto, Masa-Aki

AU - Ono, Masaomi

AU - Kawano, Toshihiko

AU - Mathews, Grant J.

PY - 2018/9/4

Y1 - 2018/9/4

N2 - The isotope Tc98 decays to Ru98 with a half-life of 4.2×106 yr and could have been present in the early Solar System. In this Letter, we report on the first calculations of the production of Tc98 by neutrino-induced reactions in core-collapse supernovae (the ν process). Our predicted Tc98 abundance at the time of solar system formation is not much lower than the current measured upper limit raising the possibility for its detection in the not too distant future. We show that, if the initial abundance were to be precisely measured, the Tc98 nuclear cosmochronometer could be used to evaluate a much more precise value of the duration time from the last core-collapse supernova to the formation of the solar system. Moreover, a unique and novel feature of the Tc98 ν-process nucleosynthesis is the large contribution (∼20%) from charged current reactions with electron antineutrinos. This means that Tc98 becomes a unique new ν-process probe of the temperature of the electron antineutrinos.

AB - The isotope Tc98 decays to Ru98 with a half-life of 4.2×106 yr and could have been present in the early Solar System. In this Letter, we report on the first calculations of the production of Tc98 by neutrino-induced reactions in core-collapse supernovae (the ν process). Our predicted Tc98 abundance at the time of solar system formation is not much lower than the current measured upper limit raising the possibility for its detection in the not too distant future. We show that, if the initial abundance were to be precisely measured, the Tc98 nuclear cosmochronometer could be used to evaluate a much more precise value of the duration time from the last core-collapse supernova to the formation of the solar system. Moreover, a unique and novel feature of the Tc98 ν-process nucleosynthesis is the large contribution (∼20%) from charged current reactions with electron antineutrinos. This means that Tc98 becomes a unique new ν-process probe of the temperature of the electron antineutrinos.

UR - http://www.scopus.com/inward/record.url?scp=85053141164&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85053141164&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.121.102701

DO - 10.1103/PhysRevLett.121.102701

M3 - Article

AN - SCOPUS:85053141164

VL - 121

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 10

M1 - 102701

ER -