Alexander Yakushev
Technische Universität München
PhysicsIsotopeAtomic physicsNuclear physicsChemistry
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Publications 163
#2A. K. MistryH-Index: 10
Last. V. YakushevaH-Index: 3
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Abstract The neutron-deficient isotopes 254,255Rf were produced in the fusion-evaporation reaction 50Ti + 206Pb at the gas-filled recoil separator TASCA. Decay properties of these nuclei were investigated by applying fast digital electronics. A search for isomeric states in both isotopes was performed by using the accompanying conversion electron emissions. Isomeric states with half-lives of 4(1) μs and >30 μs were measured for 254Rf and 255Rf, respectively, which confirm the findings at differe...
#1A. K. MistryH-Index: 10
Last. Z. Zhang (CAS: Chinese Academy of Sciences)H-Index: 3
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Abstract Fusion-evaporation reactions with the doubly magic projectile 48 Ca were used to access neutron-deficient nuclei around neptunium at the velocity filter SHIP, and investigated using the COMPASS decay spectroscopy station. With the use of digital electronics, several isotopes produced via neutron, proton, and α evaporation channels were identified by establishing correlated α -decay chains with short-lived sub-μs members. Data are given on decay chains stemming from 225,226 Np, 225 U, an...
#1K. BanerjeeH-Index: 1
#2David HindeH-Index: 40
Last. Alexander YakushevH-Index: 25
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1 CitationsSource
#1P. GerhardH-Index: 6
#2Winfried BarthH-Index: 9
Last. Alexander YakushevH-Index: 25
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#1L. LensH-Index: 2
#2Alexander YakushevH-Index: 25
Last. A. WardH-Index: 5
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Online gas-solid adsorption studies with single-atom quantities of Hg, Tl, and Pb, the lighter homologs of the superheavy elements (SHE) copernicium (Cn, Z =112), nihonium (Nh, Z =113), and flerovium (Fl, Z =114), were carried out using short-lived radioisotopes. The interaction with Au and SiO 2 surfaces was studied and the overall chemical yield was determined. Suitable radioisotopes were produced in fusion-evaporation reactions, isolated in the gas-filled recoil separator TASCA, and flushed r...
2 CitationsSource
Abstract A compact silicon detector array with high spatial granularity and fast, fully digital data recording has been developed and commissioned for the investigation of heavy and superheavy nuclear species. The detector array can be combined in close geometry with large volume germanium detectors. It offers comprehensive particle and photon coincidence and correlation spectroscopy by highly efficient evaporation residue, α , γ , conversion electron and X-ray detection supported by the high gr...
2 CitationsSource
#1A. Såmark-RothH-Index: 1
#2Luis SarmientoH-Index: 11
Last. Alexander YakushevH-Index: 25
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#1A. Di Nitto (University of Mainz)H-Index: 11
Last. V. YakushevaH-Index: 3
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The isotopic distribution of nuclei produced in the 50Ti + 249Cf reaction has been studied at the gas-filled recoil separator TASCA at GSI Darmstadt, which separates ions according to differences in magnetic rigidity. The bombardment was performed at an energy around the Bass barrier and with the TASCA magnetic fields set for collecting fusion-evaporation reaction products. Fifty-three isotopes located “north-east” of 208Pb were identified as recoiling products formed in non-fusion channels of t...
3 CitationsSource
Abstract Theoretical description and interpretation are presented of the recent experimental data on stripping of fast 238 U ions, penetrating H 2 and He gaseous targets: obtained in GSI, Darmstadt, Germany at 1.4 MeV/u with a H 2 stripper, and in RIKEN, Saitama, Japan at 11 MeV/u with H 2 and He strippers. Electron-loss and capture cross sections for uranium ions, interacting with H 2 and He targets are calculated and used as input data in the BREIT code to obtain dynamic characteristics of ura...
#1P. ChhetriH-Index: 5
#2Dieter AckermannH-Index: 32
Last. Z. ZhangH-Index: 3
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One of the most important atomic properties governing an element's chemical behavior is the energy required to remove its least-bound electron, referred to as the first ionization potential. For the heaviest elements, this fundamental quantity is strongly influenced by relativistic effects which lead to unique chemical properties. Laser spectroscopy on an atom-at-a-time scale was developed and applied to probe the optical spectrum of neutral nobelium near the ionization threshold. The first ioni...
10 CitationsSource