Conversion Electron Cascades inN102254o

Abstract

The spectrum of prompt conversion electrons emitted by excited 254No nuclei has been measured, revealing discrete lines arising from transitions within the ground state band. A striking feature is a broad distribution that peaks near 100 keV and comprises high multiplicity electron cascades, probably originating from M1 transitions within rotational bands built on high K states.

Fission Barrier of Superheavy Nuclei and Persistence of Shell Effects at High Spin: Cases ofNo254andThHenning1, Khoo2, Лопез-Мартенс3 et al. 2014Phys. Rev. Lett.Self Cite35390View full textAdd to dashboardCite

“…Parameters used for the multiplicity-to-spin conversion and total excitation energy determination. These have been calculated or extracted from the published level schemes [7-11, 14, 15, 37], experimental spectra ( [12,13] and the present data). The conversion electron contribution is calculated for the K and the L, M, N electron shells separately to account for the high fluorescence yield of K shells and the detection of K X rays.…”

“…The deduced sum energy is transformed into the total excitation energy E ⋆ = E sum γ + E CE , where E CE is the average energy removed by the conversion electrons. The value of the parameters in these equations is determined from experimental data and the properties of the known level scheme [7][8][9][10][11][12][13] and given in Table I. These parameters are for the average decays in the nucleus.…”

Charge coupling in multi-stage laser wakefield acceleration

“…To suppress the refractive loses proper guiding of the laser pulse is required. Therefore, in the booster stage guiding of the laser pulse in pre-formed plasma channel created either by optical methods [29,30] or by capillary discharge [31,32] is desirable. Fig.…”

Review of state‐of‐the‐art and output characteristics of table‐top soft x‐ray lasers

“…There is a hope that this problem can be solved by progress observed in the development of gas-filled capillaries and the guiding technique in such structures. 7 The usual number of photons in a single shot from a saturated OFI laser is about 10 9 , which is two to three orders of magnitude lower than that in transient collisional lasers. This and the still relatively long wavelength >30 nm make the OFI lasers non-competitive against the phase-matched high harmonics sources produced with a high repetition rate.…”