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1.

Laser magnetic resonance spectrum of BrO (

^{2} Π_{12} ←^{2} Π_{32}

)

A.R.W McKellar 《Journal of Molecular Spectroscopy》1981,86(1):43-54

Magnetic dipole transitions between the

^{2} Π_{12}

and

^{2} Π_{32}

components of the ground electronic state of BrO have been detected using the technique of laser magnetic resonance on three CO₂ laser lines between 964 and 970 cm^?1. This is the first direct observation of the

^{2} Π_{12}

state in BrO. The spin-orbit splitting parameter, A, is determined to be ?967.9831(2) cm^?1 for ⁷⁹Br¹⁶O and ?967.9981(2) cm^?1 for ⁸¹Br¹⁶O. Accurate values for the rotational constant

B^{eff} (^{2} Π_{12})

, the hyperfine parameters (

b_{F} + 2c 3

) and d, the Λ-doubling parameter p, and the Zeeman parameter g| are also determined from an analysis of the measured spectra. 相似文献

2.

Hyperfine interaction in the

4D_{32}

and the

4D_{52}

levels of sodium

F. Biraben K. Beroff 《Physics letters. A》1978,65(3):209-212

We have excited the

4D_{32}

and

4D_{52}

levels of sodium using Doppler-free two-photon excitation. By measuring the polarization rate in zero magnetic field of the fluorescence lines, we have deduced the following values for the hyperfine interaction

|A(4D_{32}) | = 0.23 ± 0.12 MHz

and

|A(4D_{52})| < 0.28 MHz

. The value of

A(4D_{32})

is in disagreement with the one reported by Schenk and Pillof. 相似文献

3.

Detection of the

6 D_{52} − 6 S_{12}

double quantum transition in ionized heliun

A. Eibofner 《Physics letters. A》1977,61(3):159-161

The

D_{52} ? S_{12}

double quantum r.f. transition in the n = 6 state of ionized helium has been observed using electron impact excitation in a helium atmosphere. The possibilities of the method are discussed. 相似文献

4.

The distribution of

3p_{12}

strength in ²⁰⁹Bi

C. Samanta I. Mukherjee P. Mukherjee 《Nuclear Physics A》1985,435(1):91-96

An optimized Woods-Saxon potential, which gives excellent fits to the observed proton states in ²⁰⁹Bi and ²⁰⁷Tl, is used to calculate the excitation energy of the unbound

3p_{12}

proton state in ²⁰⁹Bi. Using the wave functions given by the above potential, the strength of the core-particle interaction is calculated. The effect of the vibration of the core on the fragmentation of the

3p_{12}

state is estimated. It is found that the

3p_{12}

state at 5.123 MeV loses more than 80% of its strength to five

12^{?}

collective states in ²⁰⁹Bi and the observed

3p_{12}

state at 3.64 MeV is actually an almost equal mixture of the

3p_{12}

single-proton state and the (

4^{+}, 1 h_{92}

) collective state. 相似文献

5.

New measurements of the

n^{2} P_{12,32}

energy levels of Cs(I)

C.-J. Lorenzen K. Niemax 《Journal of Quantitative Spectroscopy & Radiative Transfer》1979,22(3):247-252

The energies of the

n^{2} P_{12} (7 ≤ n ≤ 13)

and

n^{2} P_{32} (7 ≤ n ≤ 27)

levels of CsI have been redetermined photographically from high resolution absorption measurements of the principal series lines

6^{2} S_{12} ? n^{2} P_{J}

X. The new data disagree significantly [ ≈0.13 cm^-1] with the values given in the NBS-Tables of Moore¹ which are taken from a paper by Kratz.² By means of an extended Ritz-formula, the ionization energy of CsI was found to be 31406.46±0.03 cm^-1, which is, within the limit of uncertainty, in agreement with the data of Kleiman,³ Eriksson et al.,⁴ Bockasten,⁵ and Eriksson and Wenåker.⁶ 相似文献

6.

A numerical estimate of deviations from the exponential decay law for the transition

2 P_{12} →1 S_{12}

in hydrogen

W. Satzger V. Ernst 《Physics letters. A》1978,67(3):186-188

The deviations from the exponential decay law of the

2 P_{12}

states of the Dirac hydrogen atom with respect to the transition

2 P_{12} →1 S_{12}

are numerically estimated. We find |a₀(t) ? exp(?λt)|?2.5 × 10^?4 for all t, where a₀(t) is the “exact” decay amplitude and λ is a complex constant such that (2Re λ)^?1 is the “natural lifetime” of the

2 P_{12}

states with respect to the spontaneous transition to

1 S_{12}

. 相似文献

7.

Measurement of the

2S_{12} −2P_{12}

splitting in the (μ⁻⁴He)⁺ muonic ion

G. Carboni G. Gorini E. Iacopini L. Palffy F. Palmonari G. Torelli E. Zavattini 《Physics letters. [Part B]》1978,73(2):229-231

The measurement of the

2S_{12} → 2P_{12}

energy transition in muonic helium is presented. The energy difference S¹ is found to be S_exp¹ = 1381.3±0.5 meV. This result agrees with the expected value

S ?^{1} = 1381.2±0.3 meV

obtained assuming the previously measured value for the

2S_{12} → 2P_{32}

energy difference. 相似文献

8.

Parity violating neutral current interactions and

2 S_{12} →2 S ′_{12}

transitions in hydrogenic ions

R.W. Dunford 《Physics letters. [Part B]》1981,99(1):58-61

Measurement of parity nonconservation in magnetic dipole transitions between Zeeman split

2 S_{12}

states in hydrogenic ions is considered as a probe of the weak neutral current interaction between electrons and nucleons. 相似文献

9.

Broadening of level-crossing signals in the 5

^{2} P_{32}

state of rubidium due to resonant collisions

M. łukaszewski I. Jackowska 《Physics letters. A》1983,95(8):429-431

相似文献

10.

The

N^{53}

law for bosons

Elliott H. Lieb 《Physics letters. A》1979,70(2):71-73

Non-relativistic negative bosons interacting with infinite mass positive particles via Coulomb forces are shown to be unstable in the sense that

E_{0} ? ?CN^{53}

. This agrees with the previously known lower bound

E_{0} ? ?AN^{53}

. 相似文献

11.

Magnetic moment of the

1 h_{113}

single-proton state in ¹⁴¹pr

H. Ejiri T. Shibata M. Takeda 《Nuclear Physics A》1974,221(1):211-220

A magnetic dipole core polarization was studied by investigating a magnetic moment of the 1117 keV

1 h_{112}

single-proton state in ¹⁴¹Pr. The ¹³⁹La(α, 2nγ)¹⁴¹Pr reaction was used to populate the

1 h_{112}

state with spin aligned in a plane perpendicular to the beam axis. The magnetic moment was obtained by measuring perturbed angular distributions of the 972 keV gamma rays from the

1 h_{112}

state. The g-factor of the

1 h_{112}

state in ¹⁴¹Pr was determined to be g = 1.30 ± 0.08. The isovector spin g-factor was deduced from the present result and the data for

1 h_{112}

. neutron states. It is

g_{s?}^{eff} g_{s?}^{free} = 0.45 ± 0.1

. The reduction is explaine spin-isospin (M1) core polarization.The isovector M1 core polarization factor (nuclear M1 susceptibility) is found to be one third of the M2 core polarization factor (nuclear M2 susceptibility) for the

1 h_{112}

state. 相似文献

12.

f_{72}

neutron occupancies in the Ca isotopes

C.F. Clement S.M. Perez 《Physics letters. [Part B]》1978,77(2):145-148

Methods of obtaining nucleon occupancies from total energy-weighted sum rules for spectroscopic factors are described and applied to

f_{72}

neutron transfer data for Ca isotopes. The

f_{72}

neutron occupancies obtained are consistent with shell model expectations and, for ⁴¹Ca and ⁴³Ca, with values previously obtained from an analysis using non-energy-weighted sum rules. 相似文献

13.

Proton

1h_{112}

excitations in odd-mass N = 82 nuclei

W. Enghardt H.U. Jäger 《Nuclear Physics A》1985,438(1):141-156

The structure of negative-parity states in odd-mass N= 82 isotones (135 ≦ A ≦ 145) is investigated in the framework of a model which is based on coupling one

1h_{112}

proton to π = + 1 states of the appropriate doubly-even isotonic core. It is shown that an effective model-space truncation can be achieved if only core states in the vicinity of the yrast line are taken into account. These have been selected from the several hundreds or even thousands of states obtained from shell-model calculations, where the

1g_{72}

,

2d_{52}

,

2d_{32}

and

3s_{12}

single- are assumed to be occupied. Spectroscopic data are calculated and predictions on the structure of low-lying π = ? 1 states are discussed and compared as far as possible to experimental findings. Thereby, the particle-core coupling approach is shown to be capable of describing essential properties of negative-parity levels in the N = 82 nuclei considered. 相似文献

14.

Beta-decay asymmetry and nuclear magnetic moment of

^{24} Na^{m} (T_{12} = 20 ms)

P. Heitjans H. Grupp W. Buttler F. Fujara H. Ackermann K. Dörr G. Kiese A. Körblein H.-J. Stöckmann 《Physics letters. [Part B]》1980,94(1):28-31

Polarized isomeric

^{24} Na^{m} (T_{12} = 20 ms, I^{π} = 1^{+})

nuclei were produced by capture of polarized thermal neutrons in a NaF single crystal at room temperature. The asymmetric β-decay radition of ²⁴Na^m was used to detect nuclear magnetic resonance signals yielding the magnetic moment

|μ(^{24} Na^{m})| = 1.930 (3) n.m.

(uncorrected). 相似文献

15.

Structure of low-lying 0⁺ states in

f_{72}

shell nuclei from inelastic ³He scattering

Hans-Peter Morsch 《Nuclear Physics A》1974,226(3):506-518

相似文献

16.

Flux peaking of channeled ions in interstitial compounds NbO and

ZrO_{13}

S. Yamaguchi Y. Fujino K. Ozawa K. Doi J. Takahashi M. Koiwa M. Hirabayashi 《Physics letters. A》1976,57(5):460-462

A double flux peaking has been observed in a planar channeling of a NbO single crystal, while a single peak has been seen on a

ZrO_{13}

crystal. The experimental results are compared with an analytical calculation based on the continuum model. 相似文献

17.

Two photon ionization of the

4P_{12,32}

levels of potassium with linear and circular polarization

P. Agostini P. Bensoussan M. Movssessian 《Physics letters. A》1975,53(1):89-90

The dependence of the two-photon ionization cross section of the

4P_{12,32}

levels of potassium on the light polarization has been experimentally investigated. The ratio σ(linear)/σ(circular) has been found to be 2.5 ± 0.5 for ruby-laser light. 相似文献

18.

Hanle effect detection of the

6S_{12} −7S_{12}

single-photon transition of cesium,without electric field

M.A. Bouchiat J. Guéna L. Pottier 《Optics Communications》1984,51(4):243-248

Although the oscillator strength of the

6S_{12} ?7S_{12}

transition is only 4.0×10^-15, by the Hanle effect in a zero electric field this transition gives rise to a very specific signal well above noise and background. From the hfs profile, we can test the magnetic dipole nature of the transition and obtain direct evidence for its perturbation by hyperfine mixing between the two S states. Our new values of M^hf₁/M₁ and M₁ and M₁/β agree with previous results, and the accuracy of M^hf₁/M₁ is improved. 相似文献

19.

Natural radiative lifetimes and hyperfine structure of the

4s^{2} 6p^{2} P_{32,12}

levels of gallium

G. Jönsson C. Levinson S. Svanberg C.G. Wahlström 《Physics letters. A》1983,93(3):121-123

Natural radiative lifetimes and the signs of previously determined hyperfine coupling constants were determined for the

4s^{2} 6p^{2} P_{32,12}

levels of gallium. The lifetimes were found to be 167(4) and 172(9) ns, respectively. In addition, the quadrupole moments of ⁶⁹Ga [0.17(3) b] and ⁷¹Ga [0.10(2) b] were deduced, and the isotope shifts in the 639.7 and 641.3 nm Ga lines were determined. 相似文献

20.

Magnetic moments of

(νi_{132})^{−n}

isomers in neutron-deficient lead isotopes

CH. Stenzel H. Grawe H. Haas H.-E. Mahnke K.H. Maier 《Nuclear Physics A》1983,411(2):248-254

The magnetic moments of the 12⁺ isomers in ^{192, 196, 198, 200, 206}Pb and of the

332^{+}

isomer in ²⁰⁵Pb have been measured using the PAD technique. The results for the g-factors are: g(192) = ?0.173(2), g(196) = ?0.1600(15), g(198) = ?0.1552(15), g(200) = ?0.1512(15), g(206) = ?0.1496(18), and g(205) = ?0.148(5). As all states have a rather pure

(νi_{132})^{?n}

configuration, the values reflect directly the

νi_{132}

orbital. They show a decrease towards the more neutron-deficient isotopes attributed to the reduced core polarisation as a result of decreasing occupation of the

i_{132}

neutron shell. The measured systematics are discussed regarding core polarisation, mesonic corrections, and small admixtures of core-excited states to the

i_{132}

wave function. 相似文献