Isotopic variation of experimental lifetimes for the lowest (1)Pi(u) states of N-2

Lifetimes of severa

Using Income Contingent Loans for the Financing of the Next Million Australian Solar Rooftops

Rooftop solar systems have two major benefits: a reduction of carbon emissions (a public good) and future energy bill savings for consumers. However, the availability of solar energy systems to low-income households is constrained by access to finance for the initial investment cost, an issue which could potentially be addressed with the use of income contingent loans (ICLs). By applying unconditional quantile econometric methods to HILDA income data we illustrate that for a $10,000 loan for home owners ICLs can be used with little or no cost to government to help finance the next one million solar energy devices

Optical observation of the 3s sigma F-g (3)Pi(u) Rydberg state of N-2

Using ultrahigh-resolution 1 XUV+1 UV two-photon ionization laser spectroscopy, the F (3)Pi(u)<- X (1)Sigma(g)(+)(0,0) transition of N-2 has been optically observed for the first time, and the 3s sigma(g)F (3)Pi(u)(upsilon=0) Rydberg level fully characterized with rotational resolution. The experimental spectroscopic parameters and predissociation level widths suggest strong interactions between the F state and the 3p pi(u)G (3)Pi(u) Rydberg and C-' (3)Pi(u) valence states, analogous to those well known in the case of the isoconfigurational (1)Pi(u) states. (c) 2005 American Institute of Physics

Optical observation of the 3sσ gF 3Π u Rydberg state of N 2

Using ultrahigh-resolution 1 XUV+1 UV two-photon ionization laser spectroscopy, the F Πu3 ←X Σg+1 (0,0) transition of N2 has been optically observed for the first time, and the 3s σg F Πu3 (v=0) Rydberg level fully characterized with rotational resolution. The experimental spectroscopic parameters and predissociation level widths suggest strong interactions between the F state and the 3p π u G Πu3 Rydberg and C′ Πu3 valence states, analogous to those well known in the case of the isoconfigurational Πu1 states

Extreme ultraviolet laser excitation of isotopic molecular nitrogen: The dipole-allowed spectrum of N-15(2) and (NN)-N-14-N-15

An XUV-laser-spectroscopic study of th

Ultrahigh resolution pulsed XUV laser applications: Lifetimes for the excited1ΠU states of molecular nitrogen

Using frequency multiplication of an ultra-high resolution dye laser we perform XUV + UV measurements of the predissociation linewidths of several 1ΠU states in N2. Local singlet-triplet interactions were observed and new triplet states discovered

A bright metastable helium atomic beam for lithography and atom optics

Intense, highly collimated sources of atoms have many potential applications. Bright beams will be important for competitive high flux and high resolution direct-write techniques in lithography, with the added advantage of parallel writing through laser manipulation. Intense sources will also be useful in other atom optic devices e.g. for loading atoms into hollow fiber waveguides. In atomic physics, many collision processes can only be measured with the sensitivity offered by such high flux sources. We report progress on the development of an intense, collimated beam of metastable helium atoms which improves the brightness generated by conventional nozzle discharge sources by several orders of magnitude. The system uses diode lasers to transversely collimate and then to longitudinally slow the atoms, using Zeeman tuning to compensate for the changing Doppler shift. The slowed, collimated beam is then compressed in a 2D magneto-optic trap before a final collimation stage, to achieve the required increase in intensity. Initial experiments using the helium source for some of the applications above are described

Optical observation of the C, 3s sigma F-g(3), and 3p pi(u)G(3) (3)Pi(u) states of N2

High-resolution laser-based one extreme-ultraviolet (EUV) +one UV two-photon ionization spectroscopy and EUV photoabsorption spectroscopy have been employed to study spin-forbidden Π3 u -X 1 g+ (v,0) transitions in N 14 2 and N 15 2. Levels of the C Π3 u valence and 3s g F3 and 3p π u G3 Π3 u Rydberg states are characterized, either through their direct optical observation, or, indirectly, through their perturbative effects on the Π1 u and 1 u+ states, which are accessible in dipole-allowed transitions. Optical observation of the G3 -X (0,0) and (1,0) transitions is reported for the first time, together with evidence for six new vibrational levels of the C state. Following the recent observation of the F3 -X (0,0) transition at rotational resolution [J. P. Sprengers et al., J. Chem. Phys. 123, 144315 (2005)], the F3 (v=1) level is found to be responsible for a local perturbation in the rotational predissociation pattern of the b′ 1 u+ (v=4) state. Despite their somewhat fragmentary nature, these new observations provide a valuable database on the Π3 u states of N2 and their interactions which will help elucidate the predissociation mechanisms for the nitrogen molecule. © 2008 American Institute of Physics

Structure and predissociation of the 3p sigma D-u (3)Sigma(+)(u) Rydberg state of N2: First extreme-ultraviolet and new near-infrared observations, with coupled-channels analysis

The 3p