<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Z</mml:mi></mml:math>dependence of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>K</mml:mi><mml:mi> </mml:mi><mml:mi>α</mml:mi></mml:math>x-ray satellite structure in heavy-ion—atom collisions

Watson, R. L.; Jenson, F. E.; Chiao, T.

doi:10.1103/physreva.10.1230

Cited by 76 publications

(12 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The spectra (see Fig. The energies of the satellite peaks are consistent with Hartree-Fock-Slater calculations for multiply ionized atoms (Burkhalter et al, 1972;Watson et al, 1974). In this particular case, the first peak is composed of the usual Kal and Ka2 diagram lines whereas the peaks which follow are satellite peaks composed of Κα χ rays arising from configurations having n (one, two, .…”

Section: B Satellite Peakssupporting

confidence: 73%

“…The binomial probability parameter pL may be interpreted approximately as the average L-shell ionization probability per electron for K-shell ioniz ing collisions (Watson et al, 1974). The/?L values (and the absolute cross sections for satellite production) can be calculated from theory (Kauffman et al, 1973;McGuire and Richard, 1973) but the agreement between experiment and theory is generally poor.…”

Section: B Satellite Peaksmentioning

confidence: 99%

See 1 more Smart Citation

Ion-Induced X-Ray Emission

Raman

1983

Condensed Matter

View full text Add to dashboard Cite

Section: B Satellite Peakssupporting

confidence: 73%

Section: B Satellite Peaksmentioning

confidence: 99%

Ion-Induced X-Ray Emission

Raman

1983

Condensed Matter

View full text Add to dashboard Cite

“…It was reported [2,3] that satellite yields for low Z elements were well reproduced by the binomial distribution. There may be two reasons for the apparent difference with the present case: to begin with the data of [-2, 3] were obtained for lower beam energies ( < 2 Mev/u) where the K-shell of the projectile is partly occupied, thus decreasing the importance of the L ~ K capture process (capture to L, M...-shells produces vacancy distributions similar to the binomial one with n = 8).…”

Section: P~c(ol)=(1--pc)(l-1)/2(l--pc)(l+l)/2=(1--pc)zmentioning

confidence: 85%

Distribution ofK α L n satellite yields for mediumZ elements bombarded with16O ions

Rymuza

Sujkowski

Carlen

et al. 1989

Z Phys D - Atoms, Molecules and Clusters

View full text Add to dashboard Cite

K s X-ray spectra were measured with a Du Mond type curves crystal spectrometer for 42Mo and 46Pd targets bombarded with oxygen ions at 5.5 MeV/u energy (i.e. at velocity closely matching those of the target L-shell electrons). The distribution of L-shell vacancies produced in collisions with simultaneous K-shell ionization is deduced from the measured yield distribution of the K~ X-ray satellites. The distribution shows deviations from the binomial ones. The deviations can be accounted for by assuming that the L-shell vacancy production is due to two uncorrelated processes: the direct ionization by impact and the electron capture from the L-shell of the target atom into the K-shell of the projectile, both occurring at nearly central collisions. The corresponding probability values are deduced using simple statistical considerations.

show abstract

“…From the literature we have found that the closest line is the Ly-β line of H-like Sc, and the next nearest line is the Ly-α line of Ti (see Table 5, Deslattes et al 2003, and references therein). It is still possible that the line is the He-like Sc line shifted to higher energy if the line has been produced in ion-atom collisions and has a few satellites (Watson et al 1974). Depending on the line identification one can consider different production mechanisms.…”

Section: +018mentioning

confidence: 99%

XMM-Newtonobservations of the supernova remnant RX J0852.0-4622/GRO J0852-4642

Iyudin¹,

Aschenbach²,

Becker³

et al. 2004

A&A

View full text Add to dashboard Cite

Abstract. RX J0852.0-4622 is a supernova remnant discovered in the ROSAT all-sky survey. Spatially coincident 1.157 MeV γ-ray line emission was detected with the COMPTEL instrument on-board CGRO. The analysis combining the X-ray and γ-ray data suggests that RX J0852.0-4622 is a close-by and young supernova remnant. Follow-up observations with ASCA show that the two brightest sections of the limb have non-thermal spectra, which make an independent assessment of the age and distance using the Sedov equations for the evolution of the remnant almost impossible. We have observed three rim sections of RX J0852.0-4622 with XMM-Newton and confirm the power-law type spectra measured with ASCA. We also confirm the presence of an emission-line like feature at 4.45 ± 0.05 keV, which we suggest to be emission from Ti and Sc excited by atom/ion or ion/ion high velocity collisions. The high velocity is in agreement with the width of the 1.157 MeV γ-ray line. The X-ray line flux expected from such an interaction is consistent with the 1.157 MeV γ-ray line flux measured by COMPTEL. This consistency of the X-ray line flux and the γ-ray line flux lends further support to the existence and amounts of Ti in RX J0852.0-4622 claimed by Iyudin et al. (1998, Nature, 396, 142) and to the suggestion that RX J0852.0-4622 is young and nearby (Aschenbach et al. 1999, A&A, 350, 997). Iyudin et al. (1998) quote a very large broadening of the 1.157 MeV γ-ray line which would indicate a large velocity of the emitting matter of about 15 000 km s −1 . Such high ejecta velocity for Ti is found only in explosion models of sub-Chandrasekhar type Ia supernovae (Woosley & Weaver 1994, ApJ, 423, 371; Livne & Arnett 1995, ApJ, 452, 62). In this case no compact remnant is expected. The obvious, remaining questions are what the nature and the origin of the central compact source CXOU J085201.4-461753 are and why the absorption column density apparently associated with RX J0852.0-4622 is much greater than the typical column for the Vela SNR.

show abstract

Zdependence ofK αx-ray satellite structure in heavy-ion—atom collisions

Cited by 76 publications

References 24 publications

Ion-Induced X-Ray Emission

Ion-Induced X-Ray Emission

Distribution ofK α L n satellite yields for mediumZ elements bombarded with16O ions

XMM-Newtonobservations of the supernova remnant RX J0852.0-4622/GRO J0852-4642

Contact Info

Product

Resources

About