First Direct Mass Measurement of 184Ta and Surrounding Nuclei

Jinn Ming Yap; Peter Schury; Sarah Naimi; Gemma Bartram; Alison M. Bruce; Navodhayan Chandrakumar; Jiulong Chen; James G. Cubiss; Siddharth Doshi; Sunil Dutt; Jilehu Gada; Song Guo; Yoshikazu Hirayama; George Hudson-Chang; Sota Kimura; Filip G. Kondev; Gregory Lane; Jenny Lee; Guangshun Li; Yury Litvinov; Zhong Liu; Pengcong Ma; Sorin Pascu; Zsolt Podolyák; Aiko Takamine; Michiharu Wada; Philip Walker; Hiroshi Watanabe; Yutaka X. Watanabe

doi:10.3390/atoms14080063

First Direct Mass Measurement of 184Ta and Surrounding Nuclei

Jinn Ming Yap
, Peter Schury
, Sarah Naimi
, Gemma Bartram
, Alison M. Bruce
, Navodhayan Chandrakumar
, Jiulong Chen
, James G. Cubiss
, Siddharth Doshi
, Sunil Dutt
, Jilehu Gada
, Song Guo
, Yoshikazu Hirayama
, George Hudson-Chang
, Sota Kimura
, Filip G. Kondev
, Gregory Lane
, Jenny Lee
, Guangshun Li
, Yury Litvinov

Zhong Liu, Pengcong Ma, Sorin Pascu, Zsolt Podolyák, Aiko Takamine, Michiharu Wada, Philip Walker, Hiroshi Watanabe, Yutaka X. Watanabe

School of Arch, Tech and Eng

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

Abstract

Mass measurements of isotopes around the 𝐴=184 region near stability were performed at the KEK Isotope Separation System within the RIKEN Nishina Center, Japan. The isotopes were produced via multi-nucleon transfer reactions with a 136Xe beam of 7.2 MeV/u impinging on a natural tungsten target. We report the first direct mass measurement of 184Ta, showing a 62(27) keV deviation compared to previous indirect measurements.

Original language	English
Article number	63
Number of pages	10
Journal	Atoms
Volume	14
Issue number	8
DOIs	https://doi.org/10.3390/atoms14080063
Publication status	Published - 31 Jul 2026

Keywords

MRTOF-MS
MNT
nuclear mass

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atoms-14-00063Final published version, 532 KBLicence: CC BY

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Yap, J. M., Schury, P., Naimi, S., Bartram, G., Bruce, A. M., Chandrakumar, N., Chen, J., Cubiss, J. G., Doshi, S., Dutt, S., Gada, J., Guo, S., Hirayama, Y., Hudson-Chang, G., Kimura, S., Kondev, F. G., Lane, G., Lee, J., Li, G., ... Watanabe, Y. X. (2026). First Direct Mass Measurement of 184Ta and Surrounding Nuclei. Atoms, 14(8), Article 63. https://doi.org/10.3390/atoms14080063

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title = "First Direct Mass Measurement of 184Ta and Surrounding Nuclei",

abstract = "Mass measurements of isotopes around the 𝐴=184 region near stability were performed at the KEK Isotope Separation System within the RIKEN Nishina Center, Japan. The isotopes were produced via multi-nucleon transfer reactions with a 136Xe beam of 7.2 MeV/u impinging on a natural tungsten target. We report the first direct mass measurement of 184Ta, showing a 62(27) keV deviation compared to previous indirect measurements.",

keywords = "MRTOF-MS, MNT, nuclear mass",

author = "Yap, \{Jinn Ming\} and Peter Schury and Sarah Naimi and Gemma Bartram and Bruce, \{Alison M.\} and Navodhayan Chandrakumar and Jiulong Chen and Cubiss, \{James G.\} and Siddharth Doshi and Sunil Dutt and Jilehu Gada and Song Guo and Yoshikazu Hirayama and George Hudson-Chang and Sota Kimura and Kondev, \{Filip G.\} and Gregory Lane and Jenny Lee and Guangshun Li and Yury Litvinov and Zhong Liu and Pengcong Ma and Sorin Pascu and Zsolt Podoly{\'a}k and Aiko Takamine and Michiharu Wada and Philip Walker and Hiroshi Watanabe and Watanabe, \{Yutaka X.\}",

year = "2026",

month = jul,

day = "31",

doi = "10.3390/atoms14080063",

language = "English",

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journal = "Atoms",

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Yap, JM, Schury, P, Naimi, S, Bartram, G, Bruce, AM, Chandrakumar, N, Chen, J, Cubiss, JG, Doshi, S, Dutt, S, Gada, J, Guo, S, Hirayama, Y, Hudson-Chang, G, Kimura, S, Kondev, FG, Lane, G, Lee, J, Li, G, Litvinov, Y, Liu, Z, Ma, P, Pascu, S, Podolyák, Z, Takamine, A, Wada, M, Walker, P, Watanabe, H & Watanabe, YX 2026, 'First Direct Mass Measurement of 184Ta and Surrounding Nuclei', Atoms, vol. 14, no. 8, 63. https://doi.org/10.3390/atoms14080063

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T1 - First Direct Mass Measurement of 184Ta and Surrounding Nuclei

AU - Yap, Jinn Ming

AU - Schury, Peter

AU - Naimi, Sarah

AU - Bartram, Gemma

AU - Bruce, Alison M.

AU - Chandrakumar, Navodhayan

AU - Chen, Jiulong

AU - Cubiss, James G.

AU - Doshi, Siddharth

AU - Dutt, Sunil

AU - Gada, Jilehu

AU - Guo, Song

AU - Hirayama, Yoshikazu

AU - Hudson-Chang, George

AU - Kimura, Sota

AU - Kondev, Filip G.

AU - Lane, Gregory

AU - Lee, Jenny

AU - Li, Guangshun

AU - Litvinov, Yury

AU - Liu, Zhong

AU - Ma, Pengcong

AU - Pascu, Sorin

AU - Podolyák, Zsolt

AU - Takamine, Aiko

AU - Wada, Michiharu

AU - Walker, Philip

AU - Watanabe, Hiroshi

AU - Watanabe, Yutaka X.

PY - 2026/7/31

Y1 - 2026/7/31

N2 - Mass measurements of isotopes around the 𝐴=184 region near stability were performed at the KEK Isotope Separation System within the RIKEN Nishina Center, Japan. The isotopes were produced via multi-nucleon transfer reactions with a 136Xe beam of 7.2 MeV/u impinging on a natural tungsten target. We report the first direct mass measurement of 184Ta, showing a 62(27) keV deviation compared to previous indirect measurements.

AB - Mass measurements of isotopes around the 𝐴=184 region near stability were performed at the KEK Isotope Separation System within the RIKEN Nishina Center, Japan. The isotopes were produced via multi-nucleon transfer reactions with a 136Xe beam of 7.2 MeV/u impinging on a natural tungsten target. We report the first direct mass measurement of 184Ta, showing a 62(27) keV deviation compared to previous indirect measurements.

KW - MRTOF-MS

KW - MNT

KW - nuclear mass

U2 - 10.3390/atoms14080063

DO - 10.3390/atoms14080063

M3 - Article

SN - 2218-2004

VL - 14

JO - Atoms

JF - Atoms

IS - 8

M1 - 63

ER -

First Direct Mass Measurement of 184Ta and Surrounding Nuclei

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Keywords

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