排序方式: 共有19条查询结果,搜索用时 46 毫秒
1.
Heßberger F. P. Antalic S. Giacoppo F. Andel B. Ackermann D. Block M. Heinz S. Khuyagbaatar J. Kojouharov I. Venhart M. 《The European Physical Journal A - Hadrons and Nuclei》2022,58(1):1-18
The European Physical Journal A - The goal of the present paper is twofold. First, a novel expansion many-body method applicable to superfluid open-shell nuclei, the so-called Bogoliubov in-medium... 相似文献
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Study of multi-nucleon transfer reactions in 58, 64Ni + 207Pb collisions at the velocity filter SHIP
Comas V. F. Heinz S. Hofmann S. Ackermann D. Heredia J. A. Heßberger F. P. Khuyagbaatar J. Kindler B. Lommel B. Mann R. 《The European Physical Journal A - Hadrons and Nuclei》2013,49(9):1-17
The European Physical Journal A - We investigated multi-nucleon transfer reactions in collisions of 58Ni + 207Pb and 64Ni + 207Pb at Coulomb barrier energies. The new aspect is that we used a... 相似文献
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F. P. He?berger S. Antalic B. Sulignano D. Ackermann S. Heinz S. Hofmann B. Kindler J. Khuyagbaatar I. Kojouharov P. Kuusiniemi M. Leino B. Lommel R. Mann K. Nishio A. G. Popeko ?. ?áro B. Streicher J. Uusitalo M. Venhart A. V. Yeremin 《The European Physical Journal A - Hadrons and Nuclei》2010,43(1):55-66
A detailed $ \gamma$ spectroscopic decay study of two K isomers in 254No was performed. In addition to the previously reported $ \gamma$ lines two new transitions of E = 778 , 856keV could be attributed to the decay pattern of 254m1No ( T 1/2 = 275±7 ms). The population of an excited band built up on this isomer ( $\ensuremath K^{\pi} =8^{-}$ by the decay of 254m2No ( T 1/2 = 198±13 μs) could be proven by measuring delayed $ \gamma$ - $ \gamma$ coincidences between transitions stemming from the decay of both isomeric states. The energies of the band members could be established up to $\ensuremath I^{\pi} = 15^{-}$ . A spontaneous fission branch of (2.0±1.2)×10-4 was measured for 254m1No , an upper limit of $ \le$ 1.2×10-4 was estimated for 254m2No . These values demonstrate the high stability of multi-quasiparticle configurations against spontaneous fission. Evidence for an $ \alpha$ decay branch of 254m1No in the order of 1×10-4 was found. 相似文献
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J. Khuyagbaatar S. Hofmann F. P. Heßberger D. Ackermann S. Antalic H. G. Burkhard S. Heinz B. Kindler A. F. Lisetskiy B. Lommel R. Mann K. Nishio H. J. Schött B. Sulignano 《The European Physical Journal A - Hadrons and Nuclei》2007,34(4):355-361
Isomeric states in 214Th and 213Th were identified by means of γ -rays measured in delayed coincidence with the implanted evaporation residues. These were
produced in irradiations of 164Dy with 54Cr projectiles and separated in-flight by the velocity filter SHIP. An isomeric state of I
π = 8+ with a half-life of (1.24±0.12) μs was identified in 214Th . The configuration π[1h
9/2 ⊗ 2f
7/2] was assigned to this state. An isomeric state with a half-life of (1.4±0.4) μs was observed in 213Th . Tentatively it was assigned to an I
π = 13/2+ state. 相似文献
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S.?Heinz V.?Comas S.?Hofmann D.?Ackermann J.?Heredia F.?P.?He?berger J.?Khuyagbaatar B.?Kindler B.?Lommel R.?Mann 《The European Physical Journal A - Hadrons and Nuclei》2010,43(2):181-184
We investigated the capture stage and successive nucleon transfer from the projectile to the target in the superheavy system
64
28Ni + 207
82Pb (Z
proj. + Z
target = 110) . The target-like transfer products were detected at forward angles of (0±2) degrees, such, we selected nuclei resulting
from central collisions. The data reveal several analogies to cold fusion reactions leading to superheavy elements. The observations
are in accordance with the two-center shell model. The experiments have been performed at the velocity filter SHIP at GSI. 相似文献
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Even J Yakushev A Düllmann CE Dvorak J Eichler R Gothe O Hild D Jäger E Khuyagbaatar J Kratz JV Krier J Niewisch L Nitsche H Pysmenetska I Schädel M Schausten B Türler A Wiehl N Wittwer D 《Inorganic chemistry》2012,51(12):6431-6433
Carbonyl complexes of radioactive transition metals can be easily synthesized with high yields by stopping nuclear fission or fusion products in a gas volume containing CO. Here, we focus on Mo, W, and Os complexes. The reaction takes place at pressures of around 1 bar at room temperature, i.e., at conditions that are easy to accommodate. The formed complexes are highly volatile. They can thus be transported within a gas stream without major losses to setups for their further investigation or direct use. The rapid synthesis holds promise for radiochemical purposes and will be useful for studying, e.g., chemical properties of superheavy elements. 相似文献
10.
Measurement of evaporation residue cross-sections of the reaction 30Si + 238U at subbarrier energies
K. Nishio S. Hofmann F. P. Heßberger D. Ackermann S. Antalic V. F. Comas Z. Gan S. Heinz J. A. Heredia H. Ikezoe J. Khuyagbaatar B. Kindler I. Kojouharov P. Kuusiniemi B. Lommel R. Mann M. Mazzocco S. Mitsuoka Y. Nagame T. Ohtsuki A. G. Popeko S. Saro H. J. Schött B. Sulignano A. Svirikhin K. Tsukada K. Tsuruta A. V. Yeremin 《The European Physical Journal A - Hadrons and Nuclei》2006,29(3):281-287
The reaction 30Si + 238U → 268Sg* was studied at beam energies close to the Coulomb barrier. At a center-of-mass energy of E
c.m. = 144.0MeV for reactions at half thickness of the target we measured three decay chains of 263Sg produced by evaporation of five neutrons. The cross-section was ( 67+67
-37) pb. At E
c.m. = 133.0MeV we measured three spontaneously fissioning nuclei which we assigned to the isotope 264Sg. The production cross-section was ( 10+10
-6) pb and a half-life of ( 120+126
-44) ms was determined. This half-life is a factor of twenty shorter than theoretical predictions. At E
c.m. = 128.0MeV an upper cross-section limit of 15pb was measured. The cross-section data reveal a strong influence of the orientation
of the deformed target nucleus on the production yield. Compared to excitation functions measured for the lighter system 16O + 238U → 254Fm*, a reduction of the fusion probability was observed at low beam energies indicating increasing competition from quasifission
processes. 相似文献