Radioactive ion beam manipulation at the IGISOL-4 facility

Penttilä, H.; Beliuskina, O.; Cañete, L.; Roubin, A. de; Eronen, T.; Hukkanen, M.; Kankainen, A.; Moore, Iain; Nesterenko, D. A.; Papadakis, P.; Pohjalainen, I.; Reponen, Mikael; Rinta‐Antila, S.; Sarén, J.; Uusitalo, J.; Vilén, M.; Virtanen, V.

doi:10.1051/epjconf/202023917002

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…The experiment was performed at the Ion Guide Isotope Separator On-Line (IGISOL) facility [13,14] at the University of Jyväskylä, Finland. Both the 173 Hf isotope of interest and the 173 Yb reference-mass isotope, were produced in a fusion-evaporation reaction of a 50-MeV α beam, delivered by the K130 cyclotron with an average current of 1.1 pμA, and a 1.75 mg/cm 2 -thick nat Yb target mounted within the light-ion ion guide.…”

Section: Experimental Methods and Resultsmentioning

confidence: 99%

Precision mass measurement of $$^{173}$$Hf for nuclear structure of $$^{173}$$Lu and the $$\gamma $$ process

Jaries,

Stryjczyk,

Kankainen

et al. 2023

Eur. Phys. J. A

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We report on the precise mass measurement of the $$^{173}$$ 173 Hf isotope performed at the Ion Guide Isotope Separator On-Line facility using the JYFLTRAP double Penning trap mass spectrometer. The new mass-excess value, $${\textrm{ME} = -55390.8(30)}$$ ME = - 55390.8 ( 30 ) keV, is in agreement with the literature while being nine times more precise. The newly determined $$^{173}$$ 173 Hf electron-capture Q value, $$Q_{EC} = 1490.2(34)$$ Q EC = 1490.2 ( 34 ) keV, allows us to firmly reject the population of an excited state at 1578 keV in $$^{173}$$ 173 Lu and 11 transitions tentatively assigned to the decay of $$^{173}$$ 173 Hf. Our refined mass value of $$^{173}$$ 173 Hf reduces mass-related uncertainties in the reaction rate of $$^{174}$$ 174 Hf$$(\gamma ,n)^{173}$$ ( γ , n ) 173 Hf. Thus, the rate for the main photodisintegration destruction channel of the p nuclide $$^{174}$$ 174 Hf in the relevant temperature region for the $$\gamma $$ γ process is better constrained.

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Section: Experimental Methods and Resultsmentioning

confidence: 99%

Precision mass measurement of $$^{173}$$Hf for nuclear structure of $$^{173}$$Lu and the $$\gamma $$ process

Jaries,

Stryjczyk,

Kankainen

et al. 2023

Eur. Phys. J. A

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Detailed structure of Sn131 populated in the β decay of isomerically purified In131
Benito,
Fraile,
Korgul
et al. 2024
Phys. Rev. C
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The excited structure of the single-hole nucleus Sn131 populated by the β− decay of In131 was investigated in detail at the ISOLDE facility at CERN. This new experiment took advantage of isomeric purification capabilities provided by resonant ionization, making it possible to independently study the decay of each isomer for the first time. The position of the first-excited νh11/2 neutron-hole state was confirmed via an independent mass spectroscopy experiment performed at the Ion Guide Isotope Separator On-Line facility at the University of Jyväskylä. The level scheme of Sn131 was notably expanded with the addition of 31 new γ-ray transitions and 22 new excited levels. The γ-emitting excited levels above the neutron separation energy in Sn131 were investigated, revealing a large number of states, which in some cases decay by transitions to other neutron-unbound states. Our analysis showed the dependence between the population of these states in Sn131 and the β-decaying In131 state feeding them. Profiting from the isomer selectivity, it was possible to estimate the direct β feeding to the 3/2+ ground and 11/2− isomeric states, disentangling the contributions from the three indium parent states. This made possible to resolve the discrepancies in logft for first-forbidden transitions observed in previous studies, and to determine the β-delayed neutron decay probability (Pn) values of each indium isomers independently. The first measurement of subnanosecond lifetimes in Sn131 was performed in this work. A short T1/2=18(4)−ps value was measured for the 1/2+ neutron single-hole 332-keV state, which indicates an enhanced l-forbidden M1 behavior for the ν3s1/2−1→ν3d3/2−1 transition. The measured half-lives of high-energy states populated in the β decay of the (21/2+) second isomeric state (In131m2) provided valuable information on transition rates, supporting the interpretation of these levels as core-excited states analogous to those observed in the doubly-magic Sn132. Published by the American Physical Society 2024

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Reinvestigation of $$^{91}$$Sr and $$^{95}$$Y atomic masses using the JYFLTRAP Penning trap

Jaries,

Stryjczyk,

Kankainen

et al. 2024

Eur. Phys. J. A

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We report on the precise mass measurements of the $$^{91}$$ 91 Sr and $$^{95}$$ 95 Y isotopes performed using the JYFLTRAP double Penning trap mass spectrometer. The mass-excess values from this work, $${\textrm{ME}(^{91}\textrm{Sr}) = -83645.5(13)}$$ ME ( 91 Sr ) = - 83645.5 ( 13 ) keV and $${\textrm{ME}(^{95}\textrm{Y}) = -81226.4(10)}$$ ME ( 95 Y ) = - 81226.4 ( 10 ) keV, deviate by 6.5(52) keV and $$-18(7)$$ - 18 ( 7 ) keV from the Atomic Mass Evaluation 2020 (AME20). In the case of $$^{91}$$ 91 Sr the new result disagrees with the ISOLTRAP value, while for $$^{95}$$ 95 Y, it agrees with the older JYFLTRAP value.

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Radioactive ion beam manipulation at the IGISOL-4 facility

Cited by 3 publications

References 27 publications

Precision mass measurement of $$^{173}$$Hf for nuclear structure of $$^{173}$$Lu and the $$\gamma $$ process

Precision mass measurement of $$^{173}$$Hf for nuclear structure of $$^{173}$$Lu and the $$\gamma $$ process

Detailed structure of Sn131 populated in the β decay of isomerically purified In131
Benito,
Fraile,
Korgul
et al. 2024
Phys. Rev. C
0
0
0
0
View full text Add to dashboard Cite

Reinvestigation of $$^{91}$$Sr and $$^{95}$$Y atomic masses using the JYFLTRAP Penning trap

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Radioactive ion beam manipulation at the IGISOL-4 facility

Cited by 3 publications

References 27 publications

Precision mass measurement of $$^{173}$$Hf for nuclear structure of $$^{173}$$Lu and the $$\gamma $$ process

Precision mass measurement of $$^{173}$$Hf for nuclear structure of $$^{173}$$Lu and the $$\gamma $$ process

Detailed structure of Sn131 populated in the β decay of isomerically purified In131Benito, Fraile, Korgul et al. 2024Phys. Rev. C0000View full textAdd to dashboardCite

Reinvestigation of $$^{91}$$Sr and $$^{95}$$Y atomic masses using the JYFLTRAP Penning trap

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Detailed structure of Sn131 populated in the β decay of isomerically purified In131
Benito,
Fraile,
Korgul
et al. 2024
Phys. Rev. C
0
0
0
0
View full text Add to dashboard Cite