Compton double-to-single ionization ratio of helium at 57 keV

We have measured the Compton double-to-single ionization ratio of helium using an ion time-of-flight spectrometer along with monochromatized synchrotron radiation of 57 keV. This photon energy is high and probes the Compton ionization alone, since the photoionization makes only a negligible contribution to the total cross section. Comparing our result, which is (1.25±0.3)%, with theoretical calculations and measurements at lower energies shows that this energy is most likely still not high enough to confirm the value of the asymptotic high-energy limit experimentally

Workplace experience of radiographers: impact of structural and interpersonal interventions

PURPOSE: Within the framework of organisational development, an assessment of the workplace experience of radiographers (RGs) was conducted. The aims of this study were to develop structural and interpersonal interventions and to prove their effectiveness and feasibility. METHODS: A questionnaire consisting of work-related factors, e.g. time management and communication, and two validated instruments (Workplace Analysis Questionnaire, Effort-Reward Imbalance Scale) was distributed to all RGs (n = 33) at baseline (T1). Interventions were implemented and a follow-up survey (T2) was performed 18 months after the initial assessment. RESULTS: At T1, areas with highest dissatisfaction were communication and time management for ambulant patients (bad/very bad, 57% each). The interventions addressed adaptation of work plans, coaching in developing interpersonal and team leadership skills, and regular team meetings. The follow-up survey (T2) showed significantly improved communication and cooperation within the team and improved qualification opportunities, whereas no significant changes could be identified in time management and in the workplace-related scales 'effort' expended at work and 'reward' received in return for the effort. CONCLUSION: Motivating workplace experience is important for high-level service quality and for attracting well-qualified radiographers to work at a place and to stay in the team for a longer period

Negative work perception not changed in a short work-anxiety-coping group therapy intervention

BACKGROUND: Work anxiety is often associated with long-term sick leave and requires early intervention. Work anxieties are associated with negative work perception. Therefore, one aim in early intervention is a cognitive reframing of dysfunctional perceptions of workplace characteristics. METHODS: A psychotherapeutic specialist conducted two group programs of four sessions each. One hundred twenty-three rehabilitation in-patients with work anxieties were randomly assigned either to a work anxiety-coping group or to a recreational group. The Short Questionnaire for Work Analysis (KFZA) was administered before and after the group treatment to measure perceptions of working conditions. RESULTS: Participants from the work anxiety-coping group did not see their work in a significantly more positive light at the end of the intervention compared to participants from the recreational group. CONCLUSIONS: A short work anxiety-coping group did not initiate a consistent positive re-appraisal of work. Employers and occupational physicians should not expect positive changes of work perception when an employee returns from short medical rehabilitation including work-directed treatment. Additional support from the workplace must be considered, e.g. employer–physician–employee conversation preceding return to work, or (temporary) work adjustment