000			02019cam a2200325 a 4500
003			EG-GiCUC
008			200909s2019 ua h f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aPh.D
099			_aCai01.12.20.Ph.D.2019.Za.E
100	0		_aZaher Fuad Darwish Alsamak
245	1	0	_aElectron dipole transitions and x-ray laser gain in ca-like ions / _cZaher Fuad Darwish Alsamak ; Supervised Tharwat Elsherbini , Sami H. Allam , Ahmed Abou Elmaaref
246	1	5	_aالانتقالات الالكترونية ثنائية القطب وليزر الأشعة السينية فى الأيونات شبيهة الكالسيوم
260			_aCairo : _bZaher Fuad Darwish Alsamak , _c2019
300			_a245 P. : _bfacimiles ; _c25cm
502			_aThesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics
520			_aEnergy levels, transition probabilities, oscillator strengths and lifetimes are calculated using CIV3 and LANL codes for ions in the Ca isoelectronic sequence (Z=22 to Z= 30, except Fe VII). Calculated values show good agreement with the experimental results. Collisional excitation rate coefficients are calculated using the analytical formula of Vriens and Smeets. Level population densities are calculated by solving the coupled rate equations and gain coefficient for the ions and are calculated at three selected electron temperatures, namely 1/4, 1/2 and 3/4 of the ionization potential energy (IP). The promising laser emission lines in the XUV and soft X-ray spectral regions, are at wavelengths between 730-970 {u02DA}A for Ni IX, Cu X, Zn XI ions
530			_aIssued also as CD
653		4	_aEnergy levels
653		4	_aOscillator strength
653		4	_aSoft X-ray
700	0		_aAhmed Abou Elmaaref , _eSupervisor
700	0		_aSami H. Allam , _eSupervisor
700	0		_aTharwat Elsherbini , _eSupervisor
905			_aNazla _eRevisor
905			_aShimaa _eCataloger
942			_2ddc _cTH
999			_c77655 _d77655