Selective photoionisation of lutetium isotopes

D’yachkov, A. B.; Kovalevich, S. K.; Labozin, Valerii P; Миронов, С. М.; Panchenko, V. Ya.; Firsov, V. A.; Tsvetkov, G. O.; Shatalova, G. G.

doi:10.1070/qe2012v042n10abeh014929

Cited by 28 publications

(12 citation statements)

References 6 publications

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“…The ionization efficiency of 0.2 corresponds to the ionization of 80% of population available at the ground hyperfine level 17/2. In order to compare the present results with the previously reported data 5 , 14 , production rates have been calculated for the atomic number density of 5 × 10 14 of Lu corresponding to the number density of 1.3 × 10 13 for 176 Lu. Further, the laser-atom interaction length is considered as 200 mm with a diameter of 10 mm.…”

Section: Resultsmentioning

confidence: 64%

“…This photoionization pathway has a number of advantages over the photoionization scheme reported previously 5 – 10 . They are, The wavelengths of the excitation lasers are easily accessible by high conversion efficiency Rhodamine dye lasers.…”

Section: Resultsmentioning

confidence: 93%

“…Separation of 176 Lu (natural abundance = 2.59%) from the other natural major isotope 175 Lu (natural abundance = 97.41%) through gas centrifugation is not possible as it has no volatile compounds 5 . Seemingly, AVLIS remains as the only available option for the enrichment of 176 Lu.…”

Section: Introductionmentioning

confidence: 99%

“…Seemingly, AVLIS remains as the only available option for the enrichment of 176 Lu. Kurchatov Institute 5 – 10 , Russia has extensively worked on the isotope separation of Lu isotopes. The experimental facilities required are technologically most demanding, particularly, with respect to the bandwidth of the excitation lasers, which has to be limited to < 100 MHz level.…”

Section: Introductionmentioning

confidence: 99%

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Isotope separation of 176Lu a precursor to 177Lu medical isotope using broadband lasers

Suryanarayana

2021

Sci Rep

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A new photoionization scheme accessible by Rhodamine dye lasers is proposed for the isotope separation of 176Lu.$$5d6s^{2}\,{^{2}D_{{3/2}}} (0.0\, {\text{cm}}^{{ - 1}} )\mathop{\longrightarrow}\limits^{{573.8130\, {\text{nm}}}}5d6s6p\,{^{4}F_{{3/2}}^{o}} \left( {17427.28\, {\text{cm}}^{{ - 1}} } \right)\mathop{\longrightarrow}\limits^{{560.3114\, {\text{nm}}}}$$ 5 d 6 s 2 2 D 3 / 2 ( 0.0 cm - 1 ) ⟶ 573.8130 nm 5 d 6 s 6 p 4 F 3 / 2 o 17427.28 cm - 1 ⟶ 560.3114 nm $$6s{6p}^{2}\,{^{4}{P}_{5/2}}\left(35274.5 \,{\text{cm}}^{-1}\right){\to } Autoionization\, State {\to }{Lu}^{+}$$ 6 s 6 p 2 4 P 5 / 2 35274.5 cm - 1 → A u t o i o n i z a t i o n S t a t e → Lu + Optimum conditions for the laser isotope separation have been theoretically computed and compared with the previously reported work. The enrichment of ~ 63% can be obtained with > 22 mg/h production rate even when broadband lasers with bandwidth of 500 MHz are employed for the two step excitation. The simplified system requirements for the photoionization scheme combined with a high production rate of 176Lu than previously reported is expected to reduce the global shortage of 176Lu isotope for medical applications.

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Section: Resultsmentioning

confidence: 64%

Section: Resultsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Isotope separation of 176Lu a precursor to 177Lu medical isotope using broadband lasers

Suryanarayana

2021

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“…More accurate spectroscopic analysis of lutetium auto-ionizing states was carried out in [9] using several different first steps (schemes D, E and others). Presently, there are activities on the set up of a separating unit for lutetium using the atomic vapor laser isotope separation technology (AVLIS), being developed in Russia and using a dye laser system [10,11].…”

Section: Lutetium Spectroscopy Surveymentioning

confidence: 99%

Laser resonance ionization spectroscopy on lutetium for the MEDICIS project

et al. 2017

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The MEDICIS-PROMED Innovative Training Network under the Horizon 2020 EU program aims to establish a network of early stage researchers, involving scientific exchange and active cooperation between leading European research institutions, universities, hospitals, and industry. Primary scientific goal is the purpose of providing and testing novel radioisotopes for nuclear medical imaging and radionuclide therapy. Within a closely linked project at CERN, a dedicated electromagnetic mass separator system is presently under installation for production of innovative radiopharmaceutical isotopes at the new CERN-MEDICIS laboratory, directly adjacent to the existing CERN-ISOLDE radioactive ion beam facility. It is planned to implement a resonance ionization laser ion source (RILIS) to ensure high efficiency and unrivaled purity in the production of radioactive ions. To provide a highly efficient ionization process, identification and characterization of a specific multi-step laser ionization scheme for each individual element with isotopes of interest is required. The element lutetium is of primary relevance, and therefore was considered as first candidate. Three two-step excitation schemes for lutetium atoms are presented in this work, and spectroscopic results are compared with data of other authors.

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