Synthesis and Properties of Anthraquinone-Substituted PorphyrinCompounds.-Two new porphyrins [cf. (V)] are prepared. Their photochemical properties are discussed based on UV/VIS and fluorescence spectra as well as cyclic voltammetric results. -(ZHANG, J.; YANG, G.-Y.; WEN, K.; SUN, H.-R.; YU, L.-X.; CAO, X.

In the single-active-electron model, we numerically solve the time-dependent Schrödinger equation to investigate the high-order harmonic generation (HHG) from solids. The results demonstrate that the intensity of the second plateau of the HHG with the initial multiphoton ionization channel is higher than that with the tunneling ionization channel, the cutoff energy of the harmonics with the initial multiphoton ionization channel is extended. We present a detailed analysis of the motion path of the electrons with the initial multiphoton ionization channel in the energy band structure, the results show that the electrons can be pumped directly to the conduction band at the multiphoton ionization channel. The time-dependent population imaging (TDPI) picture is used to further illustrate the excitation process of the electron, which is in agreement with the characteristics of the motion path of the electrons in the energy band structure.

High spin states of odd-odd transitional nuolei are not especially wen studied because of the complexity of the level schemes, even though of considerable interest, particularly as candidates for the appearance of larger delay in crossing frequency, or signature inversion. In the present work, the high spin states of xr'~ were identified for the first time in the 1448m(XgF,3n)l~u fusion-evaporation reaction with a beam of 90 MeV provided by the HI-13 tandem accelerator of China Institute of Atomic Energy(CIAE). In order to identify the de-exciting gamma rays of different reaction residuals and choice of the best energy of the 19F bt~ql, exeitatiort furtotiom and the residual radioactivity were measured for the bombarding energy range from 85 to 105 MeV. The u ooinoidenc~ expemnent was pea'formed using five HpGe-BGO Compton-suppre~,xl spectrometers plaoed at 15-20 em from the target and a 14 elements ball of BGO detectors. A metallic 144Sm target with an evaporated lead backing of 1.0 mg/em 2 was used. The target material was isotopicaUy enriched to 88.6% and rolled to a thickness of about 2 mg/em 2. A total of about 106 events, each with at least two Compton-suppressed HpOe detectors and one BGO detector to be in coincidence, were recorded on magnetic tapes in event-by-event mode for off-line analysis.The most strongly populated rotational band observed in the present work is presented in figure 1 and a sample of coincidence-spectra gated by 248 keV is shown in figure 2. The Nilsson configuration of this band in l@Lu is assigned as n9/2-[514]| This assignment is consistent with the systematies that exists for the neighboring isotopes and other odd-odd nuclei [I,2]. As this basis we assttmed K=5 for the band. From an analysis

The yrast band in the doubly odd 156Tm nucleus was studied through 144Sm (19F,2p5n)156Tm reaction at beam energy of 105MeV. Several high-spin states of 156Tm were identified and the highest spin of the band with configuration 7r7/2"[523] @vl/2+ [660] could be built up to spin 2511. The level structure shows the onset of a non-or weak collectivity which generally appears at neutron number of 87 in neutron-deficient rare-earth nuclei. PACS: 23.20.Lv, 27.70.+q Nuclei in the neutron-deficient rare-earth region have been of considerable interest during the past few years. One reason is that nuclei in the light rare-earth region can hold the highest angular momentum possible without fissioning, and therefore are attractive for studies of highspin states in nuclei. In transitional region, nuclei with neutron number N>88 generally exhibit strong collectivity due to their prolate shape whereas those with N<86 more appears as aligned single-particle configuration with noncollective rotation. In this region one may also expect the coexistence of different nuclear shapes and study shape evolution, described by collective and non-collective rotational models. The doubly odd nucleus, 156Tm with N=87, makes a good candidate for such studies.The present note reports on an experiment performed with five HpGe-BGO Compton-Suppressed spectrometers and a 14 elements ball of BGO detectors. The levels of 156Tm were populated by using the 144Sm(19F,2p5n) 156Tm fusion-evaporation reaction with a 105MeV 19F beam provided by the HI-13 tandem accelerator of China Institute of Atomic Energy(CIAE), and a 1.0mg/cm 2 144Sm target. Single 3,-ray spectra were collected at beam energies of 85, 90, 95, 100, and 105MeV for excitation function measurement. A )'-),-BGO coincidence experiment was performed at beam energy of 105MeV and beam current of 10nA. A total of 107 events, each with at least two Compton-Suppressed HpGe detectors and two BGO detectors to be required in coincidence, were recorded for off-line analysis. Besides 156Tm, three other nuclei were produced in this experiment with appreciable intensity from 4n, p3n and 2p3n reactions (159Lu and 158, 159yb), resulting in accidental degeneracies with a number of Vrays in 156Tm. However, much information on the contaminant lines from 159Lu(4n channel) was known from earlier studies[I], as well as the level structures of 158, 159yb well studied by other laboratories [2,3].Before our investigation, a few levels had been identified in 156Tm [4]. From our experiment, a partial level scheme of 156"I'm was established as shown in figure 1 and a coincidence-spectrum gated by 595 keV is shown in figure 2.The level ordering was made by considering the ),-ray intensity balance obtained by gating on the V-7-BGO coincidence matrix, and with additional information obtained from excitation functions. The results may be considered preliminary since no definite spins and parities can be assigned to the levels. However, certain clues to the band structures can be obtained from systematic inform...