Publisher Correction: The observation of vibrating pear-shapes in radon nuclei.

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive

There is sparse direct experimental evidence that atomic nuclei can exhibit stable "pear" shapes arising from strong octupole correlations. In order to investigate the nature of octupole collectivity in radium isotopes, electric octupole (E3) matrix elements have been determined for transitions in ^{222,228}Ra nuclei using the method of sub-barrier, multistep Coulomb excitation. Beams of the radioactive radium isotopes were provided by the HIE-ISOLDE facility at CERN. The observed pattern of E3 matrix elements for different nuclear transitions is explained by describing ^{222}Ra as pear shaped with stable octupole deformation, while ^{228}Ra behaves like an octupole vibrator.

The observation of vibrating pear-shapes in radon nuclei.

There is a large body of evidence that atomic nuclei can undergo octupole distortion and assume the shape of a pear. This phenomenon is important for measurements of electric-dipole moments of atoms, which would indicate CP violation and hence probe physics beyond the Standard Model of particle physics. Isotopes of both radon and radium have been identified as candidates for such measurements. Here, we observed the low-lying quantum states in 224Rn and 226Rn by accelerating beams of these radioactive nuclei. We show that radon isotopes undergo octupole vibrations but do not possess static pear-shapes in their ground states. We conclude that radon atoms provide less favourable conditions for the enhancement of a measurable atomic electric-dipole moment.

CHARACTERIZATION OF THE EPITHERMAL NEUTRON FIELD PRODUCED BY p+7Li REACTION IN A TANDEM ACCELERATOR USING A BONNER SPHERE SPECTROMETER.

The proton beam produced in the Nuclear Physics line of the tandem accelerator of the Centro Nacional de Aceleradores was used to generate a neutron field. In particular, 1.912 MeV protons were used to produce well-known epithermal neutrons through the p+7Li → n+7Be reaction. The aim of the work was to characterize this field while testing the performance of a Bonner sphere spectrometer in the epithermal range. Measurements were performed in four locations at different angle (0°, 30°, 60° and 90°) from beam incidence direction in order to study the angular dependence of the field. Both a parametric and numerical unfolding methods were tested to process the counts of the central detectors and obtain the energy distribution of the neutron fluence. In addition, a Monte Carlo simulation was carried out to complete the study and provide a guess spectrum for numerical unfolding. It was found that the fluence rate and mean energy decrease as the angle from beam direction increases. Total fluence was 2.75, 1.36, 0.366 and 0.216 cm-2 per charge collected in the target at 0°, 30°, 60° and 90°, respectively. Mean energy of the field ranges from 46 to 17 keV at 0° and 60°, respectively. In all cases, given that the irradiation room is so large, the contribution of thermal neutrons to the field is small. Regarding the unfolding, the total fluences estimated by all methods were in agreement within the uncertainties.

Seguridad en los sistemas de información en salud / Security in information systems in the health sector

Las tecnologías de la información y la comunicación son herramientas que permiten, en el ámbito de la salud, mejorar la calidad, la seguridad, la eficiencia y la accesibilidad. Surgen la LOPD, los datos relativos a la salud se sitúan en el rango de los más necesitados de protección, exigiendo medidas de seguridad de nivel alto. El presente artículo repasa que dice la legislación al respecto y qué medidas pueden y deben adoptarse para mejorar la seguridad y protección de datos (AU)

Information and communication technologies are tools which help improve quality, safety, efficiency and accessibility in the health sector. According to the LOPD, health- related data ranks as some of the information which most needs protection, requiring high-level security measures. This article reviews what the legislation has to say about this and which measures can be and should be adopted to improve the security and protection of data (AU)

Susceptibilidad frente el virus varicela-zóster en los trabajadores de dos empresas sanitarias / Susceptibilit y to Varicella zoster virus among wor kers at two healthcare facilities

Objetivo. Conocer la susceptibilidad al virus de la varicela-zóster y su distribución por edades en los trabajadores de dos empresas sanitarias. Métodos. Se registra durante tres años el antecedente de varicela en los exámenes de salud. A aquéllos que refieren un antecedente dudoso o negativo, se les determina la inmunoglobulina G (IgG) específica. Si el resultado es negativo, se ofrece la vacuna al trabajador. Resultados. Se ha registrado el antecedente de enfermedad por varicela en 1244 trabajadores, de los que 275 eran hombres (22,11%) y 969 mujeres (77,89%), entre 16 y 63 años y de todos los grupos profesionales. Desconocen el antecedente 363 (29,32%), realizando la determinación de IgG específica a 317. El 88,64% son positivos, 9,46% negativos y 1,9% indeterminados. Conclusiones. Son susceptibles de enfermar el 2,89% de la población estudiada (intervalo de confianza 95% 1.92-3.87). Un 2,45% de los trabajadores menores de 34 años son susceptibles. Se han hallado resultados negativos para la IgG en todas las edades y en todos los grupos profesionales

Objective. To determine susceptibility to the Varicella zoster virus and its age distribution in a sample of healthcare workers. Methods. Data on a past history of chickenpox were recorded during medical examinations performed by two separate occupational health services over a three year period. Specific IgG antibody titers were measured in those persons who reported no past history of chickenpox or who were uncertain. Persons with negative titers were then provided a vaccine. Results. A past history of chickenpox was recorded in 1244 people (275 men, 22.11%; 969 women, 77.89%), between the ages of 16 and 63 years, among all professional categories. Three hundred sixty-three workers (29.32%) had negative or uncertain past histories. Measurement of Varicella zoster IgG antibodies was performed to 317 individuals, of whom 88.64% were positive, 9.46% negative and 1.9% indeterminate. Conclusions. In our population, 2.89% of workers were susceptible to chickenpox (95% confidence interval, 1.92-3.87). Susceptibility affected 2.45% of workers under 34 years of age. Negative IgG titers were found in all age groups and occupational categories