نتایج جستجو برای: rotational band
تعداد نتایج: 163747 فیلتر نتایج به سال:
Two laser spectroscopic investigations were performed on the CS–XS (1,0) and (0,0) bands of CO. In the first experiment, using 2 / 1 resonance-enhanced multiphoton ionization, information on highly excited rotational states up to J É 50 was obtained. In the second experiment, application of a narrow-band VUV laser provided highly accurate absolute calibrations. Molecular constants for CO, CO, C...
High-angular-momentum states in 108Cd were populated via the (64)Ni((48)Ca,4n) reaction at a beam energy of 207 MeV. Gamma rays were detected using the Gammasphere array. A rotational band has been observed with a dynamic moment of inertia and deduced lower limit of the quadrupole moment suggesting a major-to-minor axis ratio larger than 1.8:1, placing it among the most deformed structures iden...
Photodissociation of CH(3)I(+) in the ground vibronic state generated by mass-analyzed threshold ionization resulted in a superb spectrum for the first excited electronic state (A (2)A(1)) with hardly any spurious peak. Rotational structure in the spectrum could be resolved by using a single mode laser. This structure for one vibronic band, 2(1)3(1)6(1), was analyzed with the assumption of Hund...
The half-life of a Kπ = 12+ isomer in 164Er has been measured to be 68(2) ns, and new decay pathways have been identified. These include highly K-forbidden γ-ray transitions directly to the ground-state rotational band, with reduced hindrance values that can be compared with those found for heavier nuclides. The new data support the interpretation that the level density is a key variable in det...
(received ; accepted in final form) PACS. 25.70-z – Low and intermediate energy heavy-ion reactions. Abstract. – In a measurement of the 9 Be(7 Li,α 7 Li)αn reaction at Ei = 52 MeV it is unam-bigously established for the first time that the 9 Be excited states around 6.5 and 11.3 MeV decay into the α + 5 He channel. This fact may support previous claims that the 11.3 MeV state is also a member ...
A photometric monitoring campaign of brown dwarfs in the Cha I star forming region in the i and R band revealed significant periodic variations of the three M6.5–M7 type brown dwarf candidates Cha Hα 2, 3 and 6 (Joergens et al. 2002). These are the first rotational periods for very young (1–5 Myr) brown dwarfs and among the first rotational periods for brown dwarfs at all. The relatively long p...
Rovibrational absorption spectra of methyl chloride in the spectral region between 2800 and 3200 cm were recorded with a high-resolution Fourier spectrometer. A multispectrum fitting procedure was used to analyze 527 transitions of the ν1 band and to retrieve the selfbroadening coefficients for various Jand K-values with an estimated accuracy around 8%. Pure rotational transitions of CH3Cl in t...
The rotational structure of the pseudorotational (PR) band n = 0 → n = 2 has been observed in jet-cooled tetrahydrofuran (THF) in the 170-360 GHz frequency range. The observed transitions were analyzed together with the previously obtained microwave data of Meyer and co-workers [R. Meyer, J. C. Lopes, J. L. Alonso, S. Melandri, P. G. Favero, W. Caminati, J. Chem. Phys., 111, 7871 (1999)]. The e...
We report on development of a new feature of the code HFODD, allowing for the angular-momentum projection of cranked symmetry-unrestricted Slater determinants. After a brief overview of the main theoretical building blocks and formalism, we present several preliminary applications. In particular, we discuss the case of a well-deformed rotational band in Gd, and we show the emergence of uncompen...
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