22 research outputs found
Imagination links with schizotypal beliefs, not with creativity or learning
Imagination refers to creating mental representations of concepts, ideas, and sensations that are not contemporaneously perceived by the senses. Although it is key to human individuality, research on imagination is scarce. To address this gap, we developed here a new psychometric test to assess individual differences in imagination and explored the role of imagination for learning, creativity, and schizotypal beliefs. In a laboratory-based (N = 180) and an online study (N = 128), we found that imagination is only weakly associated with learning achievement and creativity, accounting for 2–8% of the variance. By contrast, imagination accounted for 22.5% of the variance in schizotypal beliefs, suggesting overall that imagination may be more indicative of cognitive eccentricities rather than benefit the accumulation of knowledge or production of novel and useful ideas
Technical Design Report for the PANDA Solenoid and Dipole Spectrometer Magnets
This document is the Technical Design Report covering the two large
spectrometer magnets of the PANDA detector set-up. It shows the conceptual
design of the magnets and their anticipated performance. It precedes the tender
and procurement of the magnets and, hence, is subject to possible modifications
arising during this process.Comment: 10 pages, 14MB, accepted by FAIR STI in May 2009, editors: Inti
Lehmann (chair), Andrea Bersani, Yuri Lobanov, Jost Luehning, Jerzy Smyrski,
Technical Coordiantor: Lars Schmitt, Bernd Lewandowski (deputy),
Spokespersons: Ulrich Wiedner, Paola Gianotti (deputy
Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons
To study fundamental questions of hadron and nuclear physics in interactions
of antiprotons with nucleons and nuclei, the universal PANDA detector will be
built. Gluonic excitations, the physics of strange and charm quarks and nucleon
structure studies will be performed with unprecedented accuracy thereby
allowing high-precision tests of the strong interaction. The proposed PANDA
detector is a state-of-the art internal target detector at the HESR at FAIR
allowing the detection and identification of neutral and charged particles
generated within the relevant angular and energy range. This report presents a
summary of the physics accessible at PANDA and what performance can be
expected.Comment: 216 page
High-resolution core-level spectroscopy of free radical and transient species
High photon flux and energy resolution provided by SR undulator beam lines have recently
stimulated experimental and theoretical studies of inner-shell ionization and excitation processes in small
free molecules including highly diluted reactive species [1]. Fine spectral details revealed by using corehole
sub-natural lifetime resolution provide an insight into the photoabsorption and ionization energetics
and dynamics. Results have been obtained for the first time on the C1s photoabsorption and dissociation
processes of CH3 free radical produced in a supersonic beam by Total-Ion-Yield and 3D-ion momentum
imaging spectroscopies. Due to the high photon energy resolution clear vibrational details in electronic
transitions involving a significant molecular geometry change have been obtained. Different
photofragmentation patterns have also been observed depending on the nature of the core-excited resonance
selected. Theoretical studies of the C1s photoabsorption spectrum including explicitly vibrational effects
accompanying the photoexcitation process in this open shell molecule have been accomplished and the
comparison between experiment and theory allows a detailed characterization of the potential energy
surface for the lowest lying core-excited state. The first direct study of umbrella-like motion in inner-shell
spectroscopy will be discussed in detail in the case of CH3.
Fine spectral details have also been observed by symmetry-resolved spectroscopy in the S2p
inner-shell photoabsorption processes in the CS transient molecule produced by a MW plasma discharge
source. In some cases the vibrationally resolved structure gives direct information on the potential energy
curve of the excited state and the chemical bond change upon inner-shell excitation. S2p photoionization
processes in CS have also been studied allowing the characterization of the vibronic structure and the
potential energy curve of the ionic states. Experimental results are supported by ab initio relativistic
calculations providing a firm basis for the spectral assignment. Excellent agreement is found between
experiment and theory.
[1] S. Stranges, R. Richter, and M. Alagia, J. Chem. Phys., 116 , 3676 (2002