Not sure what to do about destructive, angry and explosive wife

When i married my wife 2 years ago after dating and living together for around 2 years. I believed she was almost perfect, like everything just fell into place when we were together, in 2 years of living together we never had more than a minor snapping at each other. However shortly after the marriage this began to change, while my wife has always had a somewhat explosive temper and she would always snap at me, or others then usually calm down quickly and apologise. However gradually over the past 2 years this ability to calm down has disappeared and her temper seems to continue to escalate to the point where every little thing is her shouting at me and often not calming down for minutes. Usually if i don't answer the question in the exact semantic way she will understand she will yell at me as if i've intentionally failed to give her any kind of answer. This has become too much of a pattern for a while now. This however is not the entire problem , in each of these cases i have to calm her down and apologise (even if i did nothing wrong). in most cases if i fail to do this and in some cases stick to my guns the situation generally escalates pretty quickly. To take last nights situation for an example (there is a pattern of similar incidents) after a hard day at work (my wife does not work) i came home and was somewhat withdrawn for the evening, partially due to extreme stress and i just wanted to play some games to de-stress. Instead of my wife coming to me and asking if anything was wrong as she would expect me to do to her she stormed into the room and asked "why are you being such an arsehole to me?" "i'm not" i replied "i've been a little withdrawn because i'm rather stressed and needed some time to myself, we've both spoken today, i'm not ignoring you, we've spoken today and i even volunteered to cook you dinner" (she had already eaten and declined). This apparently was not an acceptable answer and resulted in her yelling at me about how i was ignoring her and various other things. I then got up and said "i'll be in the other room and will be happy to talk about this once you've stopped shouting at me and are prepared to talk" at which point i left the room. A few seconds later i heard a loud crashing noise and returned to the room, it turned out she had thrown a large plastic box full of clothes at my computer (a bit deal as she has already broken one LCD monitor and the screen on my laptop through similar things and i work in IT and these things are not easy to replace given the financial situation). I removed the box and checked for damage, upon seeing there was none i put the box in the other room and came back in to confront her. at which point she had my combat boots in her hands and threw one at the computer screen (missing by about a foot). I rushed over and grabbed hold of her and pulled her down onto the bed (office/sparebedroom). It is worth noting at this point that my wife is not a weak woman, and is actually stronger than me. While i managed to hold her for a minute or two and told her to calm down she eventually threw me into the narrow gap between the wall and the bed. i hurt myself quite badly by hitting my head on the bedside table and hurt my head + neck so at this point i was in pain and did not get up. I hoped this was the end of this, not so sat on the end of the bed and proceeded to kick me in the genitals repeatedly. and as i started to get up began to hit me in the head. At this point i could no longer keep my calm while being attacked in the process of trying to stand up and lashed out at her (not my finest hour however i'm still not sure how else i could react). This connected with her head and knocked her back onto the bed. At this point as i finally got to my feet completely she grabbed my hair and pulled hard so i could not get away. It took me some time of having my hair pulled to get free and remove myself to the other side of the room at this point it became clear that my blow had done more damage than i expected as she was crying hard on the bed. As i was unsure what would happen if i went close to her (as much as all i wanted to do was go over there and hold and comfort her) i simply grabbed my laptop, got out of he house and went to my mothers. I have only messaged her since to say that i did not mean to hurt her and am sorry if i caused her any pain. (i have had no reply - i know she is ok as she is actively posting things on face book). I am not entirely sure what to do. I'm not sure i can go back to the house or if i want to. I don't think i can continue to live in fear of setting off my wife's temper and if i don't acquiesce the fear of her breaking my expensive and specialist computer equipment. Does anyone have any suggestions on how to begin a dialogue? Should i even be considering going back or if i do under what condition? I'm in love with her but the last time something like this happened i promised myself i would not put myself in the situation again and went back on condition that she did not continue to attack and break my things! This has clearly been blown out of the water. I simply have no idea what to do... any suggestions would be appreciated.

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