Search Results - "Kneip, Nina"
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Probing the Atomic Structure of Californium by Resonance Ionization Spectroscopy
Published in Atoms (01-06-2022)“…The atomic structure of californium is probed by two-step resonance ionization spectroscopy. Using samples with a total amount of about 2×1010 Cf atoms (ca…”
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Atomic-structure investigations of neutral einsteinium by laser resonance ionization
Published in Physical review research (01-10-2022)“…Excited atomic states of neutral einsteinium were investigated by resonant laser ionization using 10 pg (2×10^{10} atoms) of ^{254}Es. Ten transitions from the…”
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Actinide imaging in environmental hot particles from Chernobyl by rapid spatially resolved resonant laser secondary neutral mass spectrometry
Published in Spectrochimica acta. Part B: Atomic spectroscopy (01-04-2022)“…Radioactive particles, so-called hot particles, are of great importance in the risk assessment of environmental pollution and human health hazards. Since most…”
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Dem Kernbrennstoff auf der Spur: Nukleare Forensik an kleinsten Umweltpartikeln
Published in Physik in unserer Zeit (01-01-2023)“…ZusammenfassungDurch die Kombination von Resonanzionisation und kommerzieller Sekundärionen‐Massenspektrometrie ist es möglich, die elementare Zusammensetzung…”
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Dem Kernbrennstoff auf der Spur
Published in Physik in unserer Zeit (01-01-2023)“…Zusammenfassung Durch die Kombination von Resonanzionisation und kommerzieller Sekundärionen‐Massenspektrometrie ist es möglich, die elementare Zusammensetzung…”
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6
Ion implantation of 226Ra for a primary 222Rn emanation standard
Published in Applied radiation and isotopes (01-03-2022)“…Laser resonance ionization at the RISIKO 30 kV mass separator has been used to produce isotopically and isobarically pure and well quantified 222Rn emanation…”
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Resonant laser ionization of neptunium: investigation on excitation schemes and the first ionization potential
Published in The European physical journal. D, Atomic, molecular, and optical physics (01-05-2024)“…The atomic structure of neptunium (Np) was investigated by two-step resonance ionization spectroscopy. The study involved exploring ground-state transitions as…”
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Investigation of the atomic structure of curium and determination of its first ionization potential
Published in The European physical journal. D, Atomic, molecular, and optical physics (01-10-2022)“…We report on the investigation of the atomic structure of curium ( Z = 96 ) by resonance ionization spectroscopy. Three different excited energy levels were…”
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Influence of the hyperfine structure on plutonium in resonant laser-SNMS
Published in Hyperfine interactions (01-12-2020)“…Resonance ionization mass spectrometry is an ultra-sensitive and highly element selective tool for spectroscopy, ionization and detection of atoms and thus…”
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10
Detection of the Lowest-Lying Odd-Parity Atomic Levels in Actinium
Published in Physical review letters (14-08-2020)“…Two lowest-energy odd-parity atomic levels of actinium, 7s27p2Po1/2, 7s27p2Po3/2, were observed via two-step resonant laser-ionization spectroscopy and their…”
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Smooth trends in fermium charge radii and the impact of shell effects
Published in Nature (London) (31-10-2024)“…The quantum-mechanical nuclear-shell structure determines the stability and limits of the existence of the heaviest nuclides with large proton numbers Z ≳ 100…”
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New horizons in microparticle forensics: Actinide imaging and detection of 238Pu and 242mAm in hot particles
Published in Science advances (29-10-2021)“…Quasi non-desctructive actinide isotope detection and imaging on the 100nm scale advances single particle nuclear forensics. Micrometer-sized pollutant…”
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New horizons in microparticle forensics: Actinide imaging and detection of 238 Pu and 242m Am in hot particles
Published in Science advances (29-10-2021)“…Micrometer-sized pollutant particles are of highest concern in environmental and life sciences, cosmochemistry, and forensics. From their composition, detailed…”
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14
Highly selective two-step laser ionization schemes for the analysis of actinide mixtures
Published in Hyperfine interactions (01-12-2020)“…Resonance ionization mass spectroscopy has proven to be a very efficient and selective method for the spatially resolved ultratrace determination of actinide…”
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15
Ion implantation of 226 Ra for a primary 222 Rn emanation standard
Published in Applied radiation and isotopes (01-03-2022)“…Laser resonance ionization at the RISIKO 30 kV mass separator has been used to produce isotopically and isobarically pure and well quantified Rn emanation…”
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16
Dem Kernbrennstoff auf der Spur: Nukleare Forensik an kleinsten Umweltpartikeln
Published in Physik in unserer Zeit (01-01-2023)“…Zusammenfassung Durch die Kombination von Resonanzionisation und kommerzieller Sekundärionen‐Massenspektrometrie ist es möglich, die elementare Zusammensetzung…”
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17
Detection of missing low-lying atomic states in actinium
Published 07-05-2020“…Phys. Rev. Lett. 125, 073001 (2020) Two lowest-energy odd-parity atomic levels of actinium, 7s^27p 2P^o_1/2, 7s^27p 2P^o_3/2, were observed via two-step…”
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