Dear CP2K community,
I am trying to simulate Ag nanoparticle (38 Ag atoms cluster) surrounded by 84 water molecules under laser pulses of strength 7.2 times 10^4 W/cm2 as well as in absence of laser. The time step is 0.005 fs but i am finding the temperature increase to 1000 K after few timesteps and remains so for rest of simulation (500 fs). The simulation box is based on the density of water and Ag cluster and not unstable. I have attached the inputs and the energy log snippets below ,
in presence of laser pulse:
62073 310.365000 1.471616228 1071.970233250 -2844.424108082 -2842.952491854 10.401589267
62074 310.370000 1.471744089 1072.063371468 -2844.424236288 -2842.952492199 15.067414705
62075 310.375000 1.471872595 1072.156978985 -2844.424365131 -2842.952492536 9.740710421
62076 310.380000 1.472001732 1072.251046601 -2844.424494600 -2842.952492868 13.585177172
62077 310.385000 1.472131490 1072.345565861 -2844.424624676 -2842.952493186 9.814854871
62078 310.390000 1.472261860 1072.440531497 -2844.424755359 -2842.952493499 10.463501892
62079 310.395000 1.472392835 1072.535937818 -2844.424886639 -2842.952493804 10.205156553
62080 310.400000 1.472524411 1072.631781933 -2844.425018496 -2842.952494085 9.985440272
62081 310.405000 1.472656595 1072.728068476 -2844.425150969 -2842.952494374 9.488060078
62082 310.410000 1.472789390 1072.824800965 -2844.425284047 -2842.952494656 9.409080196
and for no field case
49337 246.685000 1.527077961 1112.370254774 -2844.477614195 -2842.950536234 112.823066678
49338 246.690000 1.526876642 1112.223607782 -2844.477412361 -2842.950535720 101.576294358
49339 246.695000 1.526675052 1112.076763517 -2844.477210273 -2842.950535221 280.879946035
49340 246.700000 1.526473204 1111.929731346 -2844.477007928 -2842.950534724 67.289668470
49341 246.705000 1.526271112 1111.782521352 -2844.476805339 -2842.950534227 241.372059850
49342 246.710000 1.526068790 1111.635143493 -2844.476602517 -2842.950533727 124.872001862
49343 246.715000 1.525866249 1111.487606515 -2844.476399487 -2842.950533239 216.841069785
49344 246.720000 1.525663499 1111.339917445 -2844.476196259 -2842.950532760 199.899992433
49345 246.725000 1.525460544 1111.192078477 -2844.475992828 -2842.950532284 31.693023487
49346 246.730000 1.525257388 1111.044093846 -2844.475789200 -2842.950531812 173.678658890
I will be glad if you can suggest how to control the temperature for the system.
Thanks and Best Regards
Deepak Ojha