First beta-decay scheme of Nb-107: New insight into the low-energy levels of Mo-107

Kurpeta J.; Plochocki A.; Urban W.; Abramuk A.; Canete L.; Eronen T.; Fijalkowska A.; Geldhof S.; Gotowicka K.; Jokinen A.; Kankainen A.; Moore I. D.; Nesterenko D.; Penttila H.; Pohjalainen I; Pomorski M.; Reponen M.; Rinta-Antila S.; de Roubin A.; Rzaca-Urban T.; Vilen M.; Wisniewski J.

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First beta-decay scheme of Nb-107: New insight into the low-energy levels of Mo-107

机译：NB-107的第一个β-衰变方案：对MO-107的低能量水平的新见解

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Monoisotopic samples of Nb-107 nuclei, produced in the proton-induced fission of U-238 and separated using the IGISOL mass separator coupled to a Penning trap, were used to perform beta- and gamma-coincidence spectroscopy of Mo-107. Gamma transitions and excited levels in Mo-107 were observed in beta decay for the first time. Spin and parity 1/2(+) for the ground state of Mo-107 is proposed, to replace the previous 5/2(+) assignment. The experimental beta-decay half-life of Nb-107 was estimated to be 0.27 +/- 0.02 s.

机译：在质子诱导的U-238诱导的U-238裂变中产生的单向异位样品，并使用偶联与炭阱的Igisol质量分离器分离，用于进行MO-107的β-和γ-吻合光谱。首次在β腐烂中观察到MO-107中的伽玛转变和激发水平。提出了MO-107的地面状态的旋转和奇偶校验1/2（+），以取代前5/2（+）分配。 NB-107的实验β-衰减半衰期估计为0.27 +/- 0.02秒。

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《Physical review, C》 |2019年第3期|共7页
作者
Kurpeta J.; Plochocki A.; Urban W.; Abramuk A.; Canete L.; Eronen T.; Fijalkowska A.; Geldhof S.; Gotowicka K.; Jokinen A.; Kankainen A.; Moore I. D.; Nesterenko D.; Penttila H.; Pohjalainen I; Pomorski M.; Reponen M.; Rinta-Antila S.; de Roubin A.; Rzaca-Urban T.; Vilen M.; Wisniewski J.;
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Univ Warsaw Fac Phys Ul Pasteura 5 PL-02093 Warsaw Poland;

Univ Warsaw Fac Phys Ul Pasteura 5 PL-02093 Warsaw Poland;

Univ Warsaw Fac Phys Ul Pasteura 5 PL-02093 Warsaw Poland;

Univ Warsaw Fac Phys Ul Pasteura 5 PL-02093 Warsaw Poland;

Univ Jyvaskyla Dept Phys POB 35 FIN-40014 Jyvaskyla Finland;

Univ Jyvaskyla Dept Phys POB 35 FIN-40014 Jyvaskyla Finland;

Univ Warsaw Fac Phys Ul Pasteura 5 PL-02093 Warsaw Poland;

Univ Jyvaskyla Dept Phys POB 35 FIN-40014 Jyvaskyla Finland;

Univ Warsaw Fac Phys Ul Pasteura 5 PL-02093 Warsaw Poland;

Univ Jyvaskyla Dept Phys POB 35 FIN-40014 Jyvaskyla Finland;

Univ Jyvaskyla Dept Phys POB 35 FIN-40014 Jyvaskyla Finland;

Univ Jyvaskyla Dept Phys POB 35 FIN-40014 Jyvaskyla Finland;

Univ Jyvaskyla Dept Phys POB 35 FIN-40014 Jyvaskyla Finland;

Univ Jyvaskyla Dept Phys POB 35 FIN-40014 Jyvaskyla Finland;

Univ Jyvaskyla Dept Phys POB 35 FIN-40014 Jyvaskyla Finland;

Univ Warsaw Fac Phys Ul Pasteura 5 PL-02093 Warsaw Poland;

Univ Jyvaskyla Dept Phys POB 35 FIN-40014 Jyvaskyla Finland;

Univ Jyvaskyla Dept Phys POB 35 FIN-40014 Jyvaskyla Finland;

Univ Jyvaskyla Dept Phys POB 35 FIN-40014 Jyvaskyla Finland;

Univ Warsaw Fac Phys Ul Pasteura 5 PL-02093 Warsaw Poland;

Univ Jyvaskyla Dept Phys POB 35 FIN-40014 Jyvaskyla Finland;

Univ Warsaw Fac Phys Ul Pasteura 5 PL-02093 Warsaw Poland;

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中图分类原子核物理学、高能物理学;
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First beta-decay scheme of Nb-107: New insight into the low-energy levels of Mo-107

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