Isomeric ratios have been measured for high-spin states in Po84198,200,206,208, At85208,209,210,211, Rn86210,211,212,213,214, Fr87208,211,212,213,214, Ra88210,211,212,214,215, and Ac89215 following ...the projectile fragmentation of a 1 A GeV 238U beam by a 9Be target at GSI Helmholtzzentrum für Schwerionenforschung. The fragments were separated in the fragment separator (FRS) and identified by means of energy loss and time-of-flight techniques. They were brought to rest at the centre of the RISING gamma-ray detector array and intensities of gamma rays emitted in the decay of isomeric states with half-lives between 100 ns and 40 μs and spin values up to 55/2 ℏ were used to obtain the corresponding isomeric ratios. The data are compared to theoretical isomeric ratios calculated in the framework of the abrasion–ablation model. Large experimental enhancements are obtained for high-spin isomers in comparison to expected values.
Using skin flaps and grafts is a well-established and reliable method for skin reconstruction in plastic surgery. Although the surgical technique has been used for several decades, the basic ...principles remain similar. Factors such as skin thickness, color, and texture, the pattern of sun exposure, and adnexal quality should be considered when selecting the appropriate donor site. Objective: Report a double full-thickness dermoepidermal graft as a reconstructive alternative in a comorbid patient instead of using local flaps. Clinical case: 80 years old comorbid male patient with a synchronic (scalp and frontal) morfeiform basal skin cancer who was taken under local anesthesia to perform an oncological resection and a double supraclavicular full-thickness dermoepidermal graft. Satisfactory evolution, well integrated double graft, adequate oncological management and acceptable aesthetic result. Conclusion: Soft tissue reconstruction is performed according to the size and depth of the wound. If the pericranium is viable split-thickness skin grafts can be used for quick and simple reconstruction, but the first choice for reconstruction is usually local scalp tissue. However, in cases like these one, when a comorbid patient can have cardiovascular complications at the operation room, the full-thickness graft under local anesthesia are quickly and less risk reconstructive option. Besides, lateral forehead defects can be managed with a skin graft alone over an intact pericranium. Finally, after 1cm margins resection in a morfeiform basal skin cancer, soft tissue coverage with several options like skin graft are acceptable.
Precise momentum distributions of identified projectile fragments, formed in the reactions 238U+Pb and 238U+Ti at 1A GeV, are measured with a high-resolution magnetic spectrometer. With increasing ...mass loss, the velocities first decrease as expected from previously established systematics, then level off, and finally increase again. Light fragments are on the average even faster than the projectiles. This finding is interpreted as the response of the spectators to the participant blast. The reacceleration of projectile spectators is sensitive to the nuclear mean field and provides a new tool for investigating the equation of state of nuclear matter.
Possibilities are studied for the optimization of EURISOL rare nuclide yields in specific regions of the nuclear chart by building the driver accelerator in a way that enables accelerating several ...additional beam species, to specific energies, besides the baseline 1 GeV proton beam. Nuclide production rates with these driver beams are compared to the production rates expected with the 1 GeV proton beam in the direct-production and the high-power-converter scenarios. Arguments are presented to show that several additional driver-beam scenarios could provide substantial benefit for the production of nuclides in specific regions of the nuclear chart. The quantitative values in this report are preliminary in the sense that they depend on assumptions on the values of some key parameters which are subject to technical development, e.g., maximum beam intensities or limits on the target heat load. The different scenarios are compared from the aspect of nuclide yields. The arguments presented here, when complemented by the corresponding technological and financial considerations, are intended to serve as a part of the basis for decisions on the design of the driver accelerator of EURISOL.
Complex structural effects in the nuclide production from the projectile fragmentation of
1
A
GeV
238U nuclei in a titanium target are reported. The structure seems to be insensitive to the ...excitation energy induced in the reaction. This is in contrast to the prominent structural features found in nuclear fission and in transfer reactions, which gradually disappear with increasing excitation energy. Using the statistical model of nuclear reactions, relations to structural effects in nuclear binding and in the nuclear level density are demonstrated.
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